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1.The chemical or substance used to start a reaction are called​

Sagot :

Answer:

Reactants

Explanation:

The substance (or substances) initially involved in a chemical reaction are called reactants or reagents.

Answer:

The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. ... Chemical reactions are described with chemical equations, which symbolically present the starting materials, end products, and sometimes intermediate products and reaction conditions.

Explanation:

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