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Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): mercury oxide......
Chemistry
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): mercury oxide – thermal decomposition – mercury – oxygen
Keywords: Chemical reaction – Reactants – Products – Change
Science
Keywords: Chemical reaction – Reactants – Products – Change
Keywords: Ammonia – Hydrogen chloride – White vapor – Gas combination
Science
Keywords: Ammonia – Hydrogen chloride – White vapor – Gas combination
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): copper hydrox......
Chemistry
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): copper hydroxide – thermal decomposition – heating – oxides
Unit one: chemical reactions. Lesson one: chemical reactions.Objective: To study the thermal......
Sciences
Unit one: chemical reactions. Lesson one: chemical reactions.Objective: To study the thermal decomposition of copper sulfate.Materials: Copper sulfate _ Spoon _ Bunsen burner _ Test tubeSteps: Heat a small amount of blue copper sulfate in a test tube using a Bunsen burner.Observation: A black......
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): thermal deco......
Science
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): thermal decomposition – sodium nitrate – heat – oxides – thermal reaction
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): silver nitrate......
Science
Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): silver nitrate – sodium chloride – white precipitate – precipitation reaction
The process of oxidation and reduction according to the traditional conceptKeywords (English): oxida......
Chemistry
The process of oxidation and reduction according to the traditional conceptKeywords (English): oxidation – reduction – electron loss – electron gain – redox reactions
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): r......
Chemistry
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): reaction rate – time – reactants – products – chemistry
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): c......
Chemistry
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): concentration – reaction rate – reactants – collision frequency
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): s......
Chemistry
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): surface area – reaction rate – reactants – collisions
Objective To observe the effect of temperature on the rate of a chemical reactionTools Two glasses w......
Chemistry
Objective To observe the effect of temperature on the rate of a chemical reactionTools Two glasses with equal amounts of water, one hot and one cold Two effervescent tabletsSteps Place one tablet in the hot water and the other in the cold water Compare the rate of fizzing in both glassesObservation......
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): e......
Chemistry
Unit One: Chemical Reactions. Lesson two: the speed of chemical reactions.Keywords (English): enzymes – reaction rate – catalysts – biochemistry
Keywords: Reaction rate – Chemical reactions – Rate of reaction – Variables
Chemistry
Keywords: Reaction rate – Chemical reactions – Rate of reaction – Variables
Keywords: Nonmetals – Oxygen – Combustion – Nonmetal oxides
Chemistry
Keywords: Nonmetals – Oxygen – Combustion – Nonmetal oxides
Keywords: Metals – Oxygen – Oxides – Chemical reaction
Science
Keywords: Metals – Oxygen – Oxides – Chemical reaction
Keywords: Specific heat – Thermal energy – Mass – Temperature
Chemistry
Keywords: Specific heat – Thermal energy – Mass – Temperature
Keywords: Homogeneous mixtures – Heterogeneous mixtures – Solutions – Suspensions – Colloids
Science
Keywords: Homogeneous mixtures – Heterogeneous mixtures – Solutions – Suspensions – Colloids
Objective: To identify the difference between hydrated and anhydrous salts and to explain the effect......
Science
Objective: To identify the difference between hydrated and anhydrous salts and to explain the effect of adding water and heating on some salts.Materials: Anhydrous copper sulfate (CuSO₄) – Anhydrous cobalt chloride (CoCl₂) – Distilled water – Dropper – Test tubes – Heat source (Bunsen burner or elec......
Keywords: Hydrometer – Liquid density – Buoyancy – Measurement
Integrated Sciences
Keywords: Hydrometer – Liquid density – Buoyancy – Measurement
An experiment demonstrating the difference between electrolytic and non-electrolytic solutions by te......
Chemistry
An experiment demonstrating the difference between electrolytic and non-electrolytic solutions by testing their ability to conduct electric current using a simple electrical circuit and observing the brightness of a lamp.Keywords: Electrolytic Solutions - Non-Electrolytic Solutions - Electrical Cond......
Objective: Observe how the shape of a glass container affects the water level.Materials: Measuring c......
Science
Objective: Observe how the shape of a glass container affects the water level.Materials: Measuring cup – glass containers of different shapes – deep container – colored waterProcedure: Place the glass containers inside the deep container to keep them stable. Measure 100 mL of colored water in the me......
Objective: To observe the properties of different liquids using colored water, honey, and milk.Mater......
Science
Objective: To observe the properties of different liquids using colored water, honey, and milk.Materials: Colored water – honey – milk – wooden sticks – wax paper – dropperProcedure: Place a drop of each liquid on wax paper at close distances. Use a wooden stick to gently push each drop and observe......
:Objective To study the activity of the enzyme catalase and how it breaks down hydrogen peroxide, an......
Sciences
:Objective To study the activity of the enzyme catalase and how it breaks down hydrogen peroxide, and to compare the activity between different enzyme sources (liver, potato, other plants):Tools Animal liver or plant alternative such as potato _ Mortar and Pestle _ Water _ Sand _ Test tubes _ Filter......
Movement into and out of cells
An experiment aimed at understanding the effect of water and sugar solution on po:Objective To study......
Movement into and out of cells
An experiment aimed at understanding the effect of water and sugar solution on po:Objective To study the effect of water and sugar solution on the length and texture of potato cylinders after immersion.:Tools Large potato - Cork borer - Pencil to push cylinders - Two test tubes - 20% sugar solution......
How can the reaction rate be increased?reaction rate – catalysts – temperature – concentration – sur......
Chemistry
How can the reaction rate be increased?reaction rate – catalysts – temperature – concentration – surface area
Objective: To deduce that cathode rays are negatively charged particles as proven by ThomsonMaterial......
Chemistry
Objective: To deduce that cathode rays are negatively charged particles as proven by ThomsonMaterials: Cathode ray tube _ electric power source _ magnetSteps: Connect the cathode ray tube to a power source Observe a straight luminous beam inside the tube Bring the magnet closer and observe what happ......
Objective: To extract DNA from strawberry cells and observe it with the naked eye.Materials: Ripe st......
Genes and heredity
Objective: To extract DNA from strawberry cells and observe it with the naked eye.Materials: Ripe strawberry _ Resealable plastic bag _ Dish soap _ Table salt _ Warm water _ Cheesecloth _ Glass cup _ Alcohol _ Wooden stickSteps: Place the strawberry in the plastic bag and mash it thoroughly. Mashing......
Keywords: Semi-permeable membrane – Diffusion – Osmosis – Molecules – Membrane transport
biology
Keywords: Semi-permeable membrane – Diffusion – Osmosis – Molecules – Membrane transport
Keywords: Acid strength – Strong acids – Weak acids – Ionization – pH
Chemistry
Keywords: Acid strength – Strong acids – Weak acids – Ionization – pH
Keywords: Equilibrium – Equal forces – Rest – Uniform motion
Chemistry
Keywords: Equilibrium – Equal forces – Rest – Uniform motion
Keywords: Solubility product – Sparingly soluble salts – Equilibrium – Solutions – Comparison
Chemistry
Keywords: Solubility product – Sparingly soluble salts – Equilibrium – Solutions – Comparison
Objective To study the effect of temperature and surface area on the rate of water evaporation.Tools......
Science
Objective To study the effect of temperature and surface area on the rate of water evaporation.Tools Dishes (2 large and 2 small) – water – electric lamp or heat/light source or direct sunlight – stopwatchSteps Pour equal amounts of water into all four dishes. Place two dishes (one large and one sma......
Purpose of experimentPreparation of carbon dioxide gas in the laboratorytoolsgraduated flask - glass......
Chemistry
Purpose of experimentPreparation of carbon dioxide gas in the laboratorytoolsgraduated flask - glass beaker - cork stopper with two holes - glass funnelU-shaped glass tube - dilute hydrochloric acid - calcium carbonatesteps Place the candle in the middle of the lab bench.Light the candle by usi......
purpose of experiment illustrate chemical indicators tools Hydrochloric acid – sodium hydroxide – o......
Chemistry
purpose of experiment illustrate chemical indicators tools Hydrochloric acid – sodium hydroxide – orange methyl indicator – litmus indicator – bromothymol blue indicator – 12 conical flask – distilled water-Phenolphthalein indicator StepsPut 10 ml of the solution in front of you into each conical......
Objective of the experiment:Calculate the volume percentage of oxygen in the airExperiment tools:Gla......
Chemistry
Objective of the experiment:Calculate the volume percentage of oxygen in the airExperiment tools:Glass basin - Graduated cylinder - Candle - Beaker with colored water - Lighter Experiment steps: - Place the candle inside the glass basin .- Pour the colored water into the glass basin .- Light the can......
Detection of the chloride anionThis video shows how to do the experimenthttps://youtu.be/_2a2CeQxanw
biology
Detection of the chloride anionThis video shows how to do the experimenthttps://youtu.be/_2a2CeQxanw
Experiment Description:This experiment demonstrates the ability of certain metals, particularly alka......
Chemistry
Experiment Description:This experiment demonstrates the ability of certain metals, particularly alkali metals, to displace hydrogen from water. When small pieces of these metals are added to water, a rapid chemical reaction occurs, producing hydrogen gas and causing a noticeable increase in temperat......
Keywords: Rutherford model – Atomic nucleus – Alpha particles – Gold foil
Chemistry
Keywords: Rutherford model – Atomic nucleus – Alpha particles – Gold foil
This experiment aims to detect the ferric ion (Fe³⁺) in an iron chloride solution. When bases such a......
Chemistry
This experiment aims to detect the ferric ion (Fe³⁺) in an iron chloride solution. When bases such as ammonium hydroxide or sodium hydroxide are added to the iron chloride solution, a reddish-brown precipitate of ferric hydroxide is formed. When hydrochloric acid is added, this precipitate dissolves......
Keywords: Thiosulfate – Chemical analysis – Reaction – Solutions
Chemistry
Keywords: Thiosulfate – Chemical analysis – Reaction – Solutions
Keywords: Chemical properties – Metals – Oxidation – Oxides - Magnesium
Science
Keywords: Chemical properties – Metals – Oxidation – Oxides - Magnesium
The color of gold changes according to the size of the gold nanoparticles:Tools Samples of nano......
Chemistry
The color of gold changes according to the size of the gold nanoparticles:Tools Samples of nanoparticles of gold (visible sample)A sample of gold minutes is small, its minutes are measured in macrosteps Bring the gold sample measured by the macro and display the flashlight on it and note what h......
Keywords: Nitrate anion – Dark brown reaction – Chemical analysis
Chemistry
Keywords: Nitrate anion – Dark brown reaction – Chemical analysis
aluminum is present, a white precipitate forms, which dissolves in excess base. This method relies o......
Chemistry
aluminum is present, a white precipitate forms, which dissolves in excess base. This method relies on the formation of aluminum hydroxide, which distinguishes Al³⁺ ions from other cations.Aluminium – Gelatinous precipitate – Chemical analysis
Detection of the phosphate anionKeywords (English): phosphate ion – yellow precipitate – chemical an......
Chemistry
Detection of the phosphate anionKeywords (English): phosphate ion – yellow precipitate – chemical analysis – reagents
Endothermic reactionsKeywords (English): endothermic reactions – energy absorption – thermal change
Chemistry
Endothermic reactionsKeywords (English): endothermic reactions – energy absorption – thermal change
Keywords: Molar volume – Avogadro’s number – Gases – Ideal gas law – Measurement
Physics
Keywords: Molar volume – Avogadro’s number – Gases – Ideal gas law – Measurement
the goal:Explanation of how we can infer a chemical change has occurred.Materials and tools:Ammonia......
Chemistry
the goal:Explanation of how we can infer a chemical change has occurred.Materials and tools:Ammonia solution - Distilled water - Glass beaker - Universal indicator - Effervescent tablets.Steps:1- Put a quantity of distilled water in the glass.2- Add drops of ammonia solution into the water in the gl......
the goal:Measuring the change in temperature of a mass of water during a combustion reaction.Materia......
Chemistry
the goal:Measuring the change in temperature of a mass of water during a combustion reaction.Materials and tools:Candle - Small metal box - Large open-ended metal box - Steel wool - Balance - Pen - Stirring rod - ThermometerSteps:1. Light the candle and weigh the large container.2. Fill the containe......
the goal:Learning how to prepare ester.Materials and tools: Electric heater - Glass cup - Test......
Chemistry
the goal:Learning how to prepare ester.Materials and tools: Electric heater - Glass cup - Test tube - Salicylic acid - Methanol - Sulfuric acid - Cotton - SpoonSteps:1. Fill the glass with water and heat it on the electric heater to the mid-level temperature.2. Weigh 1.5 grams of salicylic acid......
Determine the molar ratiomole ratio – moles – stoichiometry – chemical reaction
Chemistry
Determine the molar ratiomole ratio – moles – stoichiometry – chemical reaction
Compare melting pointsKeywords (English): melting point comparison – temperature – solids
Chemistry
Compare melting pointsKeywords (English): melting point comparison – temperature – solids
Keywords: Compounds – Elements – Bonds – Chemical reaction – Formulas
Chemistry
Keywords: Compounds – Elements – Bonds – Chemical reaction – Formulas
Keywords: Flame test – Colors – Elements – Qualitative analysis – Flame spectra
Chemistry
Keywords: Flame test – Colors – Elements – Qualitative analysis – Flame spectra
Keywords: Equation balancing – Chemical equilibrium – Reactants – Products – Atoms
Science
Keywords: Equation balancing – Chemical equilibrium – Reactants – Products – Atoms
the goal:The hydrogen atom discrete spectroscopyMaterials and tools:Hydrogen gas electrical discharg......
Chemistry
the goal:The hydrogen atom discrete spectroscopyMaterials and tools:Hydrogen gas electrical discharge tube - triple glass prism - white screen - two vertical micro-slits opposite each other - metal rod - connecting wiresSteps:1-Connect the positive terminal of the voltage source to the base of the e......
Keywords: Nitrite anion – Griess reaction – Pink color – Chemical analysis
Chemistry
Keywords: Nitrite anion – Griess reaction – Pink color – Chemical analysis
Please watch the video of the experiment here before starting itKeywords (English): iodide ion – yel......
Chemistry
Please watch the video of the experiment here before starting itKeywords (English): iodide ion – yellow precipitate – silver nitrate – chemical test
Keywords: Radiation – Alpha rays – Beta rays – Gamma rays – Radioactivity – Nucleus
Chemistry
Keywords: Radiation – Alpha rays – Beta rays – Gamma rays – Radioactivity – Nucleus
Keywords: Galvanic cell – Cell voltage – Electrodes – Electrons – Voltage
Chemistry
Keywords: Galvanic cell – Cell voltage – Electrodes – Electrons – Voltage
the goal:Draw a conclusion about the Law of Conservation of Mass.Materials and tools:Wire crucible -......
Sciences
the goal:Draw a conclusion about the Law of Conservation of Mass.Materials and tools:Wire crucible - Test tube - Balloon - Sensitive scale - Heater - Hot water bath - Test tube holder - Stopwatch - TissuesSteps:1. Place a piece of wire crucible in a medium-sized test tube.2. Attach the balloon nozzl......
The goal of the experiment: Explain the difference of materials from each other in the ability of el......
Science
The goal of the experiment: Explain the difference of materials from each other in the ability of electrical conductivity Experience Tools: Battery - electric lamp - glass cup - acids, strengths, salts and sugar solution - wood - copper - steel nail - connecting wires Steps of the experiment:......
Keywords: Acids – Bases – Indicators – pH – Color
Chemistry
Keywords: Acids – Bases – Indicators – pH – Color
The goal of the experiment: Explain the idea of work the Hofmann's voltameter Experiments Tools: &nb......
chemistry
The goal of the experiment: Explain the idea of work the Hofmann's voltameter Experiments Tools: Hofmann's voltameter apparatus- holder- acidified water with dilute sulphuric acid- battery – glowing splint Steps of the experiment: The Observation & Conclusion:Keywords (English): Hoffma......
Objective of the experiment:fat detectionExperiment tools:Vegetable oil - Skimmed milk - Whole milk......
biology
Objective of the experiment:fat detectionExperiment tools:Vegetable oil - Skimmed milk - Whole milk - Sudan III solution - Test tubesExperiment steps: - Put 2 ml of milk into test tubes.- Add 5 ml of water into a test tube and then put 2 ml of oil.- Add 10 drops of Sudan III solution to th......
Keywords: Bunsen burner – Flame – Heating – Safety – Laboratory
Chemistry
Keywords: Bunsen burner – Flame – Heating – Safety – Laboratory
the goal:To explain how to make soap at home.Materials and tools:Water sample 1 - Water sample 2 - D......
Chemistry
the goal:To explain how to make soap at home.Materials and tools:Water sample 1 - Water sample 2 - Distilled water - Dropper - 3 test tubes with stoppers - Coloring pencil - Dishwashing liquid - Test tube rack.Steps:1- Take a quantity of distilled water and place it in test tube D, repeat the step w......
Chewing gum analysisKeywords (English): chewing gum – composition – analysis – sugars
Chemistry
Chewing gum analysisKeywords (English): chewing gum – composition – analysis – sugars
Formation of SaltKeywords (English): salt formation – ionic reaction – crystallization
Chemistry
Formation of SaltKeywords (English): salt formation – ionic reaction – crystallization
Keywords: Melting point – Materials – Bonds – Solid state – Heat
Sciences
Keywords: Melting point – Materials – Bonds – Solid state – Heat
Keywords: Hydrated salts – Water molecules – Heating – Chemical formula
Chemistry
Keywords: Hydrated salts – Water molecules – Heating – Chemical formula
Detection of monosaccharides and disaccharides
Science
Detection of monosaccharides and disaccharides
the goal:Investigating flow velocity in different fluids.Materials and tools:Small balls - set of di......
Chemistry
the goal:Investigating flow velocity in different fluids.Materials and tools:Small balls - set of different fluids - graduated cylinder. Steps:1- Fill the graduated cylinder with water2- Drop a small glass ball into the graduated cylinder3- Using a stopwatch, measure the average time it takes f......
the goal:Determine the value of atmospheric pressure using a mercury barometer.Materials and tools:t......
Physics
the goal:Determine the value of atmospheric pressure using a mercury barometer.Materials and tools:tube 90 cm - basin - mercury - glass plate - holderSteps:1) Fill the test tube and the glass bowl with mercury.2) Drop the test tube in the pelvis and note what happens. Note:The drop in the level......
Manometer deviceKeywords (English): manometer – pressure measurement – gas pressure
Physics
Manometer deviceKeywords (English): manometer – pressure measurement – gas pressure
Keywords: Old truck – Rust – Corrosion – Torque – Forces – Equilibrium
Chemistry
Keywords: Old truck – Rust – Corrosion – Torque – Forces – Equilibrium
Keywords: Lemon battery – Chemical reaction – Electrodes – Voltage – Electricity
Chemistry
Keywords: Lemon battery – Chemical reaction – Electrodes – Voltage – Electricity
Keywords: Displacement reaction – Iron – Copper sulfate – Copper precipitation – Chemical change
Chemistry
Keywords: Displacement reaction – Iron – Copper sulfate – Copper precipitation – Chemical change
Investigation of factors affecting solubilitysolubility – temperature effect – stirring – surface a......
Chemistry
Investigation of factors affecting solubilitysolubility – temperature effect – stirring – surface area – type of solute – dissolving rate
Keywords: Cold materials – Heat transfer – Absorption – Temperature
Chemistry
Keywords: Cold materials – Heat transfer – Absorption – Temperature
This experiment demonstrates the effect of concentration and temperature on the equilibrium between......
Chemistry
This experiment demonstrates the effect of concentration and temperature on the equilibrium between the pink and blue cobalt chloride complexes.Keywords: Equilibrium – Forces – Motion – Position – Physics
Comparing evaporation ratesKeywords (English): evaporation – evaporation rate – temperature – surfa......
Chemistry
Comparing evaporation ratesKeywords (English): evaporation – evaporation rate – temperature – surface area – type of liquid
Keywords: Alcohols – Functional groups – Combustion – Solubility – Bonds
Chemistry
Keywords: Alcohols – Functional groups – Combustion – Solubility – Bonds
Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory
Chemistry
Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory
Keywords: Nitrogen – Salts – Chemical reaction – Analysis
Chemistry
Keywords: Nitrogen – Salts – Chemical reaction – Analysis
Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory
Chemistry
Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory
Keywords: Ammonia gas – Ammonia – Preparation apparatus – Odors – Bases
Chemistry
Keywords: Ammonia gas – Ammonia – Preparation apparatus – Odors – Bases
Keywords: Observation – Conclusion – Senses – Data – Scientific evidence
Chemistry
Keywords: Observation – Conclusion – Senses – Data – Scientific evidence
Electrical Conductivity of AcidsKeywords (English): electrical conductivity – acids – ions – electro......
Science
Electrical Conductivity of AcidsKeywords (English): electrical conductivity – acids – ions – electrolyte – electric current
Keywords: Mixtures – Separation – Filtration – Liquid – Solid
Science
Keywords: Mixtures – Separation – Filtration – Liquid – Solid
Keywords: Red cabbage – Color indicator – pH – Acids – Bases
Science
Keywords: Red cabbage – Color indicator – pH – Acids – Bases
Keywords: Chemical reactions – Daily life – Change – Energy
Science
Keywords: Chemical reactions – Daily life – Change – Energy
Materials: Properties and Changes
Objective: To identify indicators of a chemical reaction by observing the temperature change when vi......
Materials: Properties and Changes
Objective: To identify indicators of a chemical reaction by observing the temperature change when vinegar reacts with steel wool.Materials: Steel wool ball – Vinegar – Glass cup – Thermometer.Steps: Place a steel wool ball in a glass cup. Pour vinegar over the steel wool and let it sit for 1–2 minut......
Keywords: Properties – Substances – Chemical reaction – Before reaction – After reaction – Changes
Science
Keywords: Properties – Substances – Chemical reaction – Before reaction – After reaction – Changes
Objective: To investigate how water, oil, and food coloring interact and observe whether the substan......
Sciences
Objective: To investigate how water, oil, and food coloring interact and observe whether the substances mix or remain separate.Materials: Test tube – water – vegetable oil – food coloringProcedure: Pour some water into the test tube. Add some vegetable oil slowly into the test tube. Add two drops of......
Keywords: Chemical reaction – Precipitate – Reactants – Products – Chemical change – Observation
Science
Keywords: Chemical reaction – Precipitate – Reactants – Products – Chemical change – Observation
Objective: To investigate the effect of a soft drink on an iron nail and observe the changes that oc......
Sciences
Objective: To investigate the effect of a soft drink on an iron nail and observe the changes that occur over timeMaterials: Iron nail – glass cup – soft drinkSteps: Observe the appearance of the iron nail before starting the experiment Pour enough soft drink into the glass cup Drop the nail into the......
Keywords: Tools – Equipment – Laboratory – Chemical experiments – Identification – Safety
Chemistry
Keywords: Tools – Equipment – Laboratory – Chemical experiments – Identification – Safety
Objective: To distinguish between a mixture and a compound through the reaction of iron and sulfur.M......
Properties of materials
Objective: To distinguish between a mixture and a compound through the reaction of iron and sulfur.Materials: Two dishes – stirring tool – boiling tube – test tube holder – sulfur powder – iron filings – steel wool – magnet.Steps: Place some iron filings in a glass beaker, add yellow sulfur powder,......
Objective: To distinguish between saturated and unsaturated hydrocarbons.Materials: Test tubes – dro......
Biology
Objective: To distinguish between saturated and unsaturated hydrocarbons.Materials: Test tubes – dropper – test tube holder – cyclohexane solution – cyclohexene solution – bromine water.Steps: Place a small amount of cyclohexane in test tube (1). Place an equal amount of cyclohexene in test tube (2)......
Objective: To identify the effect of temperature on chemical changes and observe milk spoilage when......
Science
Objective: To identify the effect of temperature on chemical changes and observe milk spoilage when left at room temperature.Materials: Small glass cup, equal amounts of milk.Steps: Pour equal amounts of milk into two small cups. Place the first cup in the refrigerator. Leave the second cup on a kit......
Objective: To identify the compounds that make up an unknown substance by comparing its reactions wi......
Sciences
Objective: To identify the compounds that make up an unknown substance by comparing its reactions with known substances such as starch, sugar, and baking powder.Materials: Test tubes, sugar, starch, baking powder, unknown substance, water, iodine solution, sodium bicarbonate solution, dropper.Steps:......
Objective: To identify materials that dissolve in water and materials that do not.Materials: Three t......
Chemical reactions
Objective: To identify materials that dissolve in water and materials that do not.Materials: Three transparent cups _ Water _ Salt _ Sugar _ Sand _ Stirring spoonSteps: Put some water in each cup. Add a small amount of salt, sugar, and sand to the three cups of water. Stir each cup using the spoon a......
Objective: To understand the different properties of organic compounds (such as sugar, perfume, and......
Sciences
Objective: To understand the different properties of organic compounds (such as sugar, perfume, and oil) despite containing the same elements: carbon, hydrogen, and oxygen.Materials: Sugar _ Perfume _ Vegetable oil _ Glass cups _ Hot water _ SpoonSteps: Place a spoonful of each substance (sugar, per......
Objective: To test for the presence of the carbonate ion.Materials: Sodium carbonate salt. Dilute hy......
Chemistry
Objective: To test for the presence of the carbonate ion.Materials: Sodium carbonate salt. Dilute hydrochloric acid. Distilled water. Magnesium sulfate solution. Test tubes.Procedure: Place a small amount of solid sodium carbonate in a test tube. Add a few drops of dilute hydrochloric acid to the tu......
Objective: To identify the difference between exothermic and endothermic reactions. Materials: Glass......
Chemistry
Objective: To identify the difference between exothermic and endothermic reactions. Materials: Glass beaker, teaspoon, thermometer, water, magnesium oxide (MgO), sulfuric acid (H₂SO₄), baking soda (NaHCO₃), vinegar (CH₃COOH).Procedure:Place a small amount of magnesium oxide in a glass beaker.Add an......
Keywords: Magnetic properties – Transition elements – Unpaired electrons – Paramagnetism – Diamagnet......
Chemistry
Keywords: Magnetic properties – Transition elements – Unpaired electrons – Paramagnetism – Diamagnetism – Fe – Co – Ni – Cu – Zn
Keywords: Electrons – Energy levels – Principal quantum number – Electron configuration – Electron s......
Chemistry
Keywords: Electrons – Energy levels – Principal quantum number – Electron configuration – Electron shell
Chemistry
Objective To determine the concentration of an unknown solution through an acid-base reaction using the equivalence point.Tools Beaker – burette – burette stand – unknown acid or base solution – standard solution of known concentration – suitable indicator – graduated cylinderSteps Place a measured......
Objective: To study the effect of solute mass on the amount of temperature change accompanying the d......
Science
Objective: To study the effect of solute mass on the amount of temperature change accompanying the dissolution process.Materials: Solid lithium chloride (LiCl) – distilled water – glass beaker – thermometer – sensitive balance – stirring rod or spoon – stopwatch.Procedure: Prepare four identical tes......
Objective: To prove that some chemical reactions are accompanied by the release of thermal energy, w......
Science
Objective: To prove that some chemical reactions are accompanied by the release of thermal energy, which leads to an increase in the temperature of the surrounding medium.Materials: Dilute hydrochloric acid – Magnesium ribbon – Sodium hydroxide solution – Sodium carbonate – Polystyrene cups – Glass......
Objective: To compare the amount of thermal energy released from the combustion of fats and carbohyd......
Integrated Sciences
Objective: To compare the amount of thermal energy released from the combustion of fats and carbohydrates.Tools: Test tube - Combustion spoon - Bunsen burner - Sensitive balance - Thermometer - Water - Sample of white sugar (carbohydrate) - Sample of pure vegetable oil (fat)Steps: Place an appropria......
Objective: To identify chemical reactions that absorb thermal energy from the surroundings, leading......
Science
Objective: To identify chemical reactions that absorb thermal energy from the surroundings, leading to a decrease in temperature.Tools: Barium hydroxide - Ammonium chloride - Sodium bicarbonate - Dilute acid - Calcium carbonate - Glass flask - Insulated cup - Thermometer - Heat sourceSteps: Barium h......
Objective: To prove that exhaled air contains a greater amount of carbon dioxide compared to inhaled......
Organisation of the organism
Objective: To prove that exhaled air contains a greater amount of carbon dioxide compared to inhaled air.Tools: Two large boiling tubes (A and B) - A small amount of clear limewater in each tube - Mouthpiece with one-way valves - Connecting tubesSteps: Place equal amounts of clear limewater in both......
Objective: To prove that oxygen gas is essential for combustion and to study the effect of its conce......
Science
Objective: To prove that oxygen gas is essential for combustion and to study the effect of its concentration on the rate and intensity of burning.Tools: Paraffin candle _ Glass bell jar _ Piece of steel wool _ Flask containing pure oxygen gas _ MatchesSteps: Light the paraffin candle using a match.......
Objective: To study a spontaneous redox reaction between zinc metal and copper sulfate solutionMater......
Chemistry
Objective: To study a spontaneous redox reaction between zinc metal and copper sulfate solutionMaterials: Zinc plate _ Copper sulfate solution CuSO4 _ Glass beaker _ Forceps _ Glass rodSteps: Pour copper sulfate solution into a beaker Immerse the zinc plate in the solution Observe the surface and co......
Objective: To identify the reaction of ethanol with sodium and prove that ethanol has weak acidic pr......
Objective: To identify the reaction of ethanol with sodium and prove that ethanol has weak acidic properties.Materials: Test tube (10 mL) _ Ethanol _ A piece of sodium _ MatchstickSteps: Put 5 mL of ethanol in a test tube. Add a small piece of sodium carefully into the test tube. Close the mouth of......
Objective: Study the oxidation of ethanol.Materials: Test tube 10 mL _ Water bath _ Ethanol _ Acidif......
Organic chemistry
Objective: Study the oxidation of ethanol.Materials: Test tube 10 mL _ Water bath _ Ethanol _ Acidified potassium dichromate solution (orange in color)Steps: Place 3 mL of ethanol in a test tube. Add an equal amount of acidified potassium dichromate solution. Heat the mixture in a water bath for 10......
Objective: Preparation of ethene gas from ethyl alcohol (ethanol) and identification of the dehydrat......
Organic chemistry
Objective: Preparation of ethene gas from ethyl alcohol (ethanol) and identification of the dehydration reaction of alcohols.Materials: Bunsen burner _ Round-bottom flask _ Thermometer _ Ethanol (ethyl alcohol) _ Concentrated sulfuric acid _ Bottle containing sodium hydroxide solution _ Water trough......
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Objective: Preparation of ethyne gas from calcium carbide. To identify the reaction of calcium carbi......
Chemistry
Objective: Preparation of ethyne gas from calcium carbide. To identify the reaction of calcium carbide with water.Materials: Gas preparation apparatus (flask + dropping funnel) _ Calcium carbide CaC₂ _ Water _ Bottle containing copper sulfate solution in dilute sulfuric acid _ Water trough _ Inverte......
Objective: To determine the water content in popcorn kernels by measuring mass before and after heat......
Objective: To determine the water content in popcorn kernels by measuring mass before and after heating.Materials: Glass beaker _ 20 popcorn kernels _ 5 mL cooking oil _ aluminum foil _ electronic balance _ stove or hot plateProcedure: Add 5 mL of cooking oil to a clean glass beaker. Measure the mas......
Objective: To study alcoholic fermentation of sugars and understand how sugars are converted into et......
Chemistry
Objective: To study alcoholic fermentation of sugars and understand how sugars are converted into ethanol.Materials: Glass flask _ sugar solution (molasses or sucrose solution) _ yeast _ stopper with delivery tube _ limewater beakerProcedure: Place the sugar solution in the flask. Add an appropriate......
Objective: To study the hydrogenation reaction of aromatic compounds. To understand how an unsaturat......
Chemistry
Objective: To study the hydrogenation reaction of aromatic compounds. To understand how an unsaturated compound (benzene) is converted into a saturated compound (cyclohexane).Materials: Sealed reaction flask _ hydrogen gas _ liquid benzene _ nickel catalyst _ heat source from 100 to 200 degrees Cels......
Objective: To detect the presence of carbon and hydrogen elements in organic compounds.Materials: Te......
Chemistry
Objective: To detect the presence of carbon and hydrogen elements in organic compounds.Materials: Test tube _ heat source _ organic substances _ copper oxide _ anhydrous copper sulfate white _ clear limewater _ delivery tubeProcedure: Place a small amount of an organic substance inside a test tube.......
Objective: To study the acidic properties of acetic acid. To identify its reactions with metals, met......
Objective: To study the acidic properties of acetic acid. To identify its reactions with metals, metal oxides, bases, and carbonates.Materials: Test tubes with holder _ dropper _ acetic acid _ magnesium strip _ calcium oxide _ sodium hydroxide solution _ sodium bicarbonate _ burning match or glowing......
Objective: To study the effect of lactase enzyme on lactose sugar and prove the ability of enzymes t......
Objective: To study the effect of lactase enzyme on lactose sugar and prove the ability of enzymes to break down disaccharides into monosaccharides that can be detected using Benedict’s test or glucose strips.Materials: 2% lactose solution _ two test tubes _ lactase enzyme (powdered tablet) _ beaker......
Objective: To identify methods for detecting phenol and distinguishing it from other compounds.Mater......
Chemistry
Objective: To identify methods for detecting phenol and distinguishing it from other compounds.Materials: Test tubes _ dropper _ aqueous phenol solution _ iron chloride solution _ bromine water _ sodium hydroxide solutionProcedure: Place a quantity of phenol solution in a test tube. Add a few drops......
Objective: To observe the combustion of methane gas and identify it as an exothermic combustion reac......
Chemistry
Objective: To observe the combustion of methane gas and identify it as an exothermic combustion reaction that produces carbon dioxide gas and water vapor.Materials: Large glass beaker _ liquid soap _ glycerin _ water _ rubber tube connected to a methane gas source _ small funnel _ candle fixed on a......
Objective: To prove that carbon dioxide gas in human exhaled air reacts with water to form carbonic......
Objective: To prove that carbon dioxide gas in human exhaled air reacts with water to form carbonic acid, and observe its effect on the color change of thymol indicator according to pH.Materials: Test tube _ blue thymol solution _ sodium hydroxide solution _ plastic pipetteProcedure: Pour 5 mL of bl......
Objective: To identify the reaction of a nonmetal carbon with oxygen gas.Materials: Piece of charcoa......
Objective: To identify the reaction of a nonmetal carbon with oxygen gas.Materials: Piece of charcoal carbon _ combustion spoon _ glass jar filled with oxygen gas _ Bunsen burner _ water _ dropper _ purple litmus indicatorProcedure: Place the charcoal piece in the combustion spoon. Heat the charcoal......
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