MULTIPLE-CHOICE QUESTION What are the atoms of the left called? Products A seesaw Reactants

## Step 1<br />In a chemical reaction, the substances that are present before the reaction takes place are called reactants. These reactants undergo a chemical change to form new substances, which are called products.<br />## Step 2<br />The question refers to the atoms on the left side of a chemical equation. In a chemical equation, the reactants are always written on the left side.<br />## Step 3<br />Therefore, the atoms on the left side of a chemical equation are called reactants.