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Heat energy changes in chemical reactions

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Question 59

The thermal decomposition of calcium carbonate is an endothermic reaction.

Figure 1 shows the reaction profile for this reaction.

Reaction profile diagram showing a horizontal line for the reactant, calcium carbonate, at a lower energy level on the left, and a horizontal line for the products, calcium oxide and carbon dioxide, at a higher energy level on the right. An upward curve connects the reactants to the products, representing the activation energy. The y-axis is labelled 'Energy' and the x-axis is labelled 'Progress of reaction'.

Explain how Figure 1 shows that the thermal decomposition of calcium carbonate is an endothermic reaction.

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Heat energy changes in chemical reactions Questions

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

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