Exothermic and Endothermic Reactions

A series of free IGCSE Chemistry Activities and Experiments (Cambridge IGCSE Chemistry).

Exothermic and Endothermic Reactions
There is always an overall energy change in any chemical reaction. This activity investigates whether heat is taken in (endothermic) or given out (exothermic) during different reactions.

Examples of Exothermic and Endothermic Reactions
Ammonium nitrate and water
Combustion of methanol
Energy profile and activation energy.

Investigating Temp Changes Copper Sulfate and Zinc
Investigating the temperature change when zinc powder reacts with copper sulfate.
The temperature rises from 25°C to 72°C in an exothermic reaction as copper and zinc sulfate is produced.

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Baking soda & Citric Acid Reaction
This is similar to the Sherbet and water experiment
Record down the temperature change and state whether it is an endothermic or exothermic reaction

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Barium hydroxide and ammonium chloride
Record down the temperature change and state whether it is an endothermic or exothermic reaction

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