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1. Which of the following is true of a chemical reaction?
a. Only physical changes occur.
b. New substances must form.
c. Only changes of state occur.
d. Chemical properties remain the same.

Respuesta :

B.) new substances must form

Answer:

I'm pretty sure it is "B: New Substances must form"

Explanation:

This is because two substances are being mixed together and cannot be reversed. Therefore, it creates a completely new substance.

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