Question

Write two observations when calcium carbonate is heated in a test tube?

Answer 1

Answer:2 observations:-

1.the beaker will become hot(as it is an exothermic process )

2.CO2 gas will be produced ...test for CO2 through lime water which will turn milky on passing CO2

Explanation:

Answer 2

Answer:

Carbondioxide and Calcium oxide are produced

Explanation:

When calcium carbonate is heated in a test tube in the presence of abundant oxygen and sufficient heat, then calcium carbonate decomposes to carbon dioxide and calcium oxide.

Now calcium oxide physically looks like a white powdered material, hence it will be easily seen through the transparent test tube.

Carbon dioxide is a colorless and smell less gas and its easy test is to pass the gas through lime water which will turn milky