Question

- What are the original substances that take part in a chemical reaction called?
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Answer 1

Answer:

Those are called reactants

Answer 2

Answer:

In a chemical reaction the substances are kniwn as reactants.

More-

In a chemucal reaction the number of atoms changed during reaction is akwats equals to the number of atoms formed in product.

☑ The starting substance of a reaction (left side) is known as reactant.

☑ The end substance of a reaction (right side) is known as product.

Hope it helps you...