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3 years ago

5

Which is a sign of a chemical change? A) Ice cream left at room temperature melts. B) Calcium chloride is dissolved in H2O and d

isappears. C) Paint on a freshly painted wall dries and is no longer sticky. D) When H2S gas is bubbled into a lead acetate solution, a precipitate forms.

2 answers:

Eduardwww [97]3 years ago

7 0

D, because a physical change is when something changes but doesn't change into a new substance. A chemical change is when something changes into a new substance.

Katarina [22]3 years ago

5 0

Chemical change is any change that results in the formation of new chemical substances. (Thanks to google)

This the answer is D

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Explanation:

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