Learning objective
State that energy is conserved in chemical reactions.
Read the explanation, check the common trap, then practise with flashcards and questions.
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Topic
Exothermic and endothermic reactions
Subtopic
Energy transfer during exothermic and endothermic reactions
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Understand this objective
Quick explanation
State that energy is conserved in chemical reactions
- This point belongs to Exothermic and endothermic reactions, especially Energy transfer during exothermic and endothermic reactions.
- You need to be able to state that energy is conserved in chemical reactions.
- The key ideas to know are state, chemical, and conserved.
- Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.
Key concepts
Why it matters
This objective helps connect Energy transfer during exothermic and endothermic reactions to exam-style questions, flashcards, and revision notes for Exothermic and endothermic reactions.
Quick student answer
What should you know about energy is conserved in chemical reactions?
Direct answer
In Chemistry, this page helps you answer questions about energy is conserved in chemical reactions within Exothermic and endothermic reactions. Focus on the key process, correct scientific terms, and how the idea links to exam-style questions. Key terms to check are Energy conservation and Chemical reaction.
Key terms
- Energy conservation: The principle that energy cannot be created or destroyed, only transformed from one form to another in chemical reactions.
- Chemical reaction: A process that involves the rearrangement of the molecular or ionic structure of a substance, resulting in the formation of new substances.
Common trap
Misunderstanding Energy Conservation: Emphasize that energy is conserved in chemical reactions; it can change forms but is never lost.
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Revision notestopic notes
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Open revision notesRelated learning objectives
- Explain that a reaction transferring energy to the surroundings leaves products with less energy than the reactants by the amount transferred.
Energy transfer during exothermic and endothermic reactions
- Define an exothermic reaction as one that transfers energy to the surroundings.
Energy transfer during exothermic and endothermic reactions
- Explain that the temperature of the surroundings increases during an exothermic reaction.
Energy transfer during exothermic and endothermic reactions
- Identify combustion, many oxidation reactions and neutralisation as examples of exothermic reactions.
Energy transfer during exothermic and endothermic reactions
- Describe everyday uses of exothermic reactions, including self-heating cans and hand warmers.
Energy transfer during exothermic and endothermic reactions