1. Asses the chemical reactions given below and answer the questions.
Calcium carbonate + heat Calcium oxide + Carbon dioxide
Calcium oxide + water Calcium hydroxide + heat
a. Mention the reactants and products in each case.
b. Which among these is endothermic?
c. Which one is exothermic?
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Answer:
1st case Calcium carbonate is reactant and calcium oxide and carbon dioxide are products
B) It is endothermic.
2nd case calcium oxide and water are reactants and calcium hydroxide and heat are products.
It is exothermic.
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