Question

write the balanced chemical equation for the following process heating calcium carbonate​

Answer 1

Answer:

CaCO3---^--->CaO+CO2

hope it helps:)

Answer 2

Explanation:

take a few zinc granules in a conical flask

add about 5ml of dilute hydrochloric acid to the zinc granules in the conical flask

observed the changes in the conical flask

now keep a burning match stick near the mouth of the conical flask from the above activity you can conclude that during a chemical change : 1)the original substance lose their characteristic 1properties.hence these may be products with different physical states and colours

2)chemical changes may be exothermic i.e,head may be liberated or absorbed

3)they may from an insoluble substance known as precipitate.

4)gas may be evolved