Chemistry Paper 1
Exothermic and endothermic
Energy Changes training before the targeted original question drill.
Adaptive teaching card
Make it concrete
Analogy
Exothermic and endothermic is like changing a recipe: the particles, amounts and conditions decide what product you can make.
Why now: An analogy helps when the definition feels abstract.
Do this: Match each part of the analogy to the science idea.
Learn it
Exothermic reactions transfer energy to the surroundings.
Endothermic reactions take in energy from the surroundings.
Temperature change is evidence of energy transfer.