EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following indicate that a chemical reaction has occurred?
A
The formation of gas bubbles
B
An odor
C
a change in color
D
all of these indicate a chemical reaction
Explanation: 

Detailed explanation-1: -Summary. Potential signs that chemical reactions have occurred include a change in color, change in temperature, formation of a gas, and formation of a precipitate.

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