Question

select all the reactants

Explanation:

Step1: Recall Reactants Definition

Reactants are substances before a reaction (left of arrow in equation). The top equation is \( \text{C} + \text{O}_2
ightarrow \text{CO}_2 \). So reactants are C (carbon) and \( \text{O}_2 \) (oxygen molecule).

Step2: Identify Reactant Images

• Left image: two red O atoms ( \( \text{O}_2 \) ), matches reactant \( \text{O}_2 \).
• Middle image: single gray C atom, matches reactant C.
• Right image: \( \text{CO}_2 \) (product), not a reactant.

Answer:

The Left Image ( \( \text{O}_2 \) ) and The Middle Image (C)