the goal:The amount of water absorbed by mosses Materials and tools:Glass beaker - water - string - moss plant - scale - stopwatch - maskSteps:1- Put a quantity of moss plant on a piece of thin cloth, then tie it in the form of a ball.2- Measure the mass of the cloth ball containing the algae.3......

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......

Animal and plant cell under a microscope

Watching onion cells (introductory experiment)

What weight?

the goal:Inference: Cells use food or sugar to produce energy. Note the mitochondria in different cells.Materials and tools:Listed equipment - 2% glucose solution - resealable plastic bag - small weights - glass beaker - water bath at 37 degrees CelsiusSteps:1. Put a quantity of glucose solutio......

Newton's second law

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......

Boyle's Law

Types of radiation

the goal:- Explaining the relationship between buoyant force, weight of an object in air, and its apparent weight in water.- Applying the Archimedes' principle to buoyancy.- Inferring the effect of surface area and known mass density on the amount of water displaced.Materials and tools:Different wei......

Earthworm Anatomy

Force and Acceleration

How do generators work?

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......

Grasshopper anatomy

Manometer device

the goal:Exploring how mammals keep their bodies warm in cold places.Materials and tools:Vegetable fat - Ice - Kitchen brush - Stopwatch.Steps:Lower the lab assistant's hand into the ice and note the stopwatch time.Note how long the lab assistant can tolerate the cold before raising their hand.Use t......

Wood density

the goal:Testing the time it takes for a glass ball to roll down a slope and determining whether the height of the slope affects the motion of the glass ball.Materials and tools:Books - Wooden or cardboard surface - Glass ball - Stopwatch.Steps:1- Place one book under the wooden board, then place th......

Estimating the molar volume of a substance

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.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 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......