Question

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WHAT IS A CHEMICAL REACTION?
Chemical Reactions
This is a chemical reaction. How do you know it is a
chemical reaction?
It contains elements.
There are different compounds after they are mixed together.
There is addition involved.
CH4 + 202 =CO2 + 2 H20

Answer 1

Answer: They are different elements after mixed.

Step-by-step explanation:

A new product formed is a major indicator of a chemical reaction, the other two options just look like fillers.