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......

Endothermic reactionsKeywords (English): endothermic reactions – energy absorption – thermal change

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......

Keywords: Solubility product – Sparingly soluble salts – Equilibrium – Solutions – Comparison

Keywords: Equilibrium – Equal forces – Rest – Uniform motion

Keywords: Calories – Food – Energy – Combustion – Heat

Keywords: Specific heat – Thermal energy – Mass – Temperature

Keywords: Cold materials – Heat transfer – Absorption – Temperature

Keywords: Equilibrium – Forces – Motion – Position – Physics