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  • Chemical Reactions and Acids, Bases, and Salts Online Quiz
  • Each substance on the left side of the arrow in a chemica...
Multiple choice

Each substance on the left side of the arrow in a chemical equation is a

  1. Catalyst

  2. Coefficient

  3. Product

  4. Reactant

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a chemical equation, substances written to the left of the arrow are the starting materials, known as reactants.

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