How do you know when gas is made?

Answer 1

For example a gas forms bubbles in a solution.

Answer 2

Gas is typically made through chemical reactions or processes that involve the release of gases such as hydrogen, oxygen, carbon dioxide, or methane. You can often observe gas production by bubbles forming in a liquid or the expansion of a gas container due to pressure. Additionally, the presence of specific odors or changes in temperature may indicate gas production.