Reactions That Release or Absorb Heat
Science · Matter & Materials · conceptual
Distinguish between exothermic reactions (release energy, temperature rises) and endothermic reactions (absorb energy, temperature falls), with everyday and industrial examples
What mastery looks like
- Defines exothermic and endothermic in terms of energy transfer to and from the surroundings
- Gives two examples of each type from everyday life (e.g. combustion, hand warmers; photosynthesis, cold packs)
- Explains energy changes during changes of state (melting is endothermic, freezing is exothermic)
- Interprets a temperature change in an experiment to classify the reaction type
Check your understanding
If Reactions That Release or Absorb Heat shook a sports cold pack to activate it and it got cold, or lit a match and it got hot, could they explain what type of reaction is happening in each case and why one gets hot while the other gets cold?
Prerequisites
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