How can you identify gas in a chemical reaction without observing the atoms or molecules?

Question

asked Feb 9, 2022 13.9k views

1 Answer

Ronny Bigler · Answer 1 · 2022-02-13T13:16:18+0000

Answer:

There are five signs of a chemical change:

Colour Change.

Production of an odour.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid).