It changes chemically.
it probaly reacts with something like an alkilai and reacts which shows it is a drug or something
It fizzes.
it fizzes answers.comBO
It Bubbles
Copper oxider
It reacts
How something reacts depends on a lot of different things. Physical reactions are much different than chemical reactions for example.
When the keyword reacts with water, it forms a strong base.
it blows up
CO2 is released.
Thhheyfhr
it reacts vigourasly