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Heat energy changes in chemical reactions

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Question 88

The thermal decomposition of calcium carbonate is an endothermic reaction.

On the template below, complete the reaction profile diagram for this reaction.

Reaction profile template

You should:

  • Draw a curve representing the progress of the reaction.
  • Draw and label the level of the products (calcium oxide + carbon dioxide).
  • Draw and label an arrow to show the activation energy (EaE_aEa​).
[2]

Heat energy changes in chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /Heat energy changes in chemical reactions

Practise Edexcel GCSE Chemistry Heat energy changes in chemical reactions with exam-style questions for Foundation and Higher tier. 130 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank