Keywords: Weight – Mass – Gravity – Force – Balance

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......

Keywords: Newton’s second law – Force – Mass – Acceleration – Equation F=ma

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......

Keywords: Boyle’s law – Pressure – Volume – Gases – Inverse relationship

Keywords: Radiation – Alpha rays – Beta rays – Gamma rays – Radioactivity – Nucleus

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......

Keywords: Earthworm – Anatomy – Segments – Digestive system – Circulatory system

Force and Acceleration force – acceleration – Newton’s second law – mass

How do generators work?Keywords (English): electric generator – induction – magnetic field – electric current

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......

Keywords: Grasshopper – Anatomy – Insects – Body parts – Digestive system – Circulatory system

Manometer deviceKeywords (English): manometer – pressure measurement – gas pressure

Calculating the instantaneous induced electromotive force in the generator coil during a full cycleKeywords (English): mammals – warmth – insulation – fur – body fat

Keywords: Wood density – Mass – Volume – Buoyancy – Matter

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......

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 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......

the goal:Explaining the factors that affect the process of photosynthesis.Materials and tools:Glass beaker - Glass funnel - Test tube - Aquatic plant - Sodium bicarbonate - Light sourceSteps:1- Fill the glass with water.2- Add a quantity of sodium bicarbonate to the water.3- Place the aquatic plant......

Keywords: Convex lens – Concave lens – Refraction – Focal point – Image

The effect of speed in collisionKeywords (English): speed effect – collision – impact – momentum

Morse codeKeywords (English): Morse code – communication – dots and dashes – coding