Chemistry, 06.09.2020 02:01 mir1425

A student is in the lab and combines two unknown substances ( which you should never do because it is not safe). one is a white solid, and the other one is clear liquid. after the substances are mixed, you observe... 1- bubbles forming,
2- dementia turns a dark purple color, and
3-the white solid substance dissolves into the liquid.

did a physical change or a chemical change happen? which of the observation would you use as evidence in why?

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A student is in the lab and combines two unknown substances ( which you should never do because it i...

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