Keywords: Acids – Bases – Indicators – pH – Color

Keywords: Reaction rate – Chemical reactions – Rate of reaction – Variables

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): Hoffman......

The goal of the experiment: Learn about the greenhouse effect Experiments Tools: Two empty bottles - two thermometers - sodium bicarbonate powder - vinegar – water Steps of the experiment: The Observation & Conclusion:Keywords (English): greenhouse effect – greenhouse gases – carbon dioxide –......

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): reaction rate – time – reactants – products – 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): surface area – reaction rate – reactants – collisions

Keywords: Periodic table – Elements – Groups – Periods – Classification

Keywords: Equation balancing – Chemical equilibrium – Reactants – Products – Atoms

Keywords: Amylase enzyme – Temperature – Digestion – Starch – Enzyme activity

Keywords: Double slit – Interference – Diffraction – Waves – Light

Keywords: Metals – Acids – Hydrogen – Chemical reaction-Magnesium

Keywords: Chemical properties – Metals – Oxidation – Oxides - Magnesium

Keywords: Atom – Proton – Neutron – Electron – Nucleus

The water cycleKeywords (English): water cycle – evaporation – condensation – precipitation

the goal:Explain how distilled water is obtained.Materials and tools:2 flasks - condenser - connecting tubes - salt water solution - flame - stoppersSteps:Place the condenser horizontally on the standPlace the flasks, one over a Bunsen flame and the other on a lab benchPour the salty water into the......

Keywords: Galvanic cell – Cell voltage – Electrodes – Electrons – Voltage

Investigation of the process of electrolysis of waterelectrolysis of water – oxygen – hydrogen – electric current

Keywords: Displacement reaction – Iron – Copper sulfate – Copper precipitation – Chemical change

Keywords: Homogeneous mixtures – Heterogeneous mixtures – Solutions – Suspensions – Colloids

Three states of matterThis experiment shows how water changes between its three states due to temperature. Ice melts when heated to become liquid water, then turns into vapor with continued heating. When the vapor touches a cold surface, it condenses back into water droplets.states of matter – solid......

Keywords: Acid strength – Strong acids – Weak acids – Ionization – pH

Keywords: Atomic mass – Protons – Neutrons – Atom – Mass number

Keywords: Chromatography – Separation – Colors – Adsorption – Analysis

Keywords: Vitamin C – Ascorbic acid – Detection – Iodine solutions

Keywords: Mixtures – Separation – Filtration – Liquid – Solid

Electrical Conductivity of AcidsKeywords (English): electrical conductivity – acids – ions – electrolyte – electric current

Keywords: Chemical reaction – Reactants – Products – Change

Keywords: Mass – Matter – Measurement – Balance – Volume

Keywords: Water cycle model – Evaporation – Condensation – Precipitation – Model

Keywords: Physical state change – Melting – Freezing – Evaporation – Condensation

Objective: To identify the essential materials required for rust formation in ironMaterials: Steel wool – glass containers – lidProcedure: Place a piece of steel wool in each container and label them (1, 2, 3) In container 1, add a small amount of water to cover part of the steel wool and leave it u......

Objective: To prove that gases have volume and occupy spaceMaterials: Two equal balloons – two rulers – 15 cm strings – a heavy book – adhesive tape – clips – scissorsSteps: Inflate both balloons to the same size and tie them tightly Cut three pieces of string Tie both balloons to one ruler evenly o......

Objective: To investigate the relationship between the amount of transferred thermal energy and the temperature of waterMaterials: Polystyrene cup – immersion heater – thermometer – electronic balance – joule meter – stopwatch – metal stand – stirring rodProcedure: Measure the mass of water in the p......

Objective To simulate the formation of crystals in igneous rocks and study the factors affecting the size and speed of crystal formation.Materials Two glass containers _ paper clips _ pencils _ thread _ coarse salt _ hot water _ teaspoonSteps Tie a paper clip to the end of each thread Fill both cont......

Keywords: Chemical reaction – Precipitate – Reactants – Products – Chemical change – Observation

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......

Keywords: Body parts – Body organs – Interactive model – Body structure – Simplified anatomy

Objective: To distinguish between reversible and irreversible reactions.Materials: Candle – white paper – egg – ice cubes – sugar – butter – heat source – heat-resistant container – tongs.Procedure: Observe each material before heating. Heat each material gradually and record the changes. Cool each......

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 cube size and surface area-to-volume ratio on the rate and depth of dye diffusion inside cubes.Tools Starch agar or gelatin block ≥ 3 cm thick – ruler and sharp knife – beaker with methylene blue or potassium permanganate solution – forcepsSteps Use the ruler and kni......

:Objective To identify the presence of invisible air pollutants and demonstrate that air contains suspended particles such as dust and smoke that are not visible to the naked eye.:Tools White paper _ Adhesive material (Vaseline or oil) _ Adhesive tape _ Open place inside the room _ Smoke source:Step......

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......

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: 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......