Write a description of how you know a chemical reaction is occurring.

Chemical reactions involve the chemical interaction of two or more chemical substances, result in a new substance being formed, and are usually irreversible. The signs of chemical reactions include gas formation, energy release in the form of light or flame, heat absorption, precipitate formation, and color change.

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pstnonsonjoku pstnonsonjoku · Answer 2 · 2021-10-12T13:14:42+02:00

I can know that a chemical reaction is occurring by appearance of color, appearance of a solid, evolution of a gas or absorption or evolution of heat.

A chemical change is also called a chemical reaction. It involves the recombination of atoms present in two or more substances to form a new substance(s) called the product(s).

During the process of chemical change, certain cues can help us know that a chemical change has taken place. Such cues include;

appearance of color
appearance of a solid
evolution of a gas
absorption or evolution of heat

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