Question

This equation shows the reaction that occurs when calcium carbonate

decomposes. what type of reaction is it? CaCO3 + energy – CaO + CO2

a. endothermic
b. synthesis
c. replacement
d. exothermic

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Answer 1

a. endothermic

Step-by-step explanation:

The reaction shown is an endothermic reaction. In such reaction, they require an input of energy.

• Endothermic changes involves absorption of heat from the surrounding.
• The surrounding becomes colder at the end of the reaction.
• When heat is on the reactant side, it suggests a reaction that requires a considerable input of energy.