Question

note the colour of gas evolved on heating

Answer 1

Name the gas whose colour is to be noted on heating.

Answer 2

The colour of the gas will be white and hence it is the reaction of the gas to the heat.

This can be done with a good experiment and hence it is the science experiment and hence it is the best kind of experiments for middle schoolers and high schoolers so that they can be the most interesting experiments with a wow factor that will get younger people more interested in the science itself.