In the chemical reaction 2H₂ + O₂ → 2H₂O, what are the reactants and products?

• A. Reactants: H₂; Products: O₂ and H₂O
• B. Reactants: H₂ and O₂; Products: H₂O
• C. Reactants: H₂O; Products: H₂ and O₂
• D. Reactants: H₂O and O₂; Products: H₂

Answer: (B)

Verified step by step guidance

1. Identify the chemical equation given: 2H₂ + O₂ → 2H₂O.
2. Understand that reactants are the substances that start a chemical reaction, and they are found on the left side of the equation.
3. Recognize that products are the substances formed as a result of the chemical reaction, and they are found on the right side of the equation.
4. In the equation 2H₂ + O₂ → 2H₂O, the reactants are H₂ and O₂ because they are on the left side of the arrow.
5. The product in this reaction is H₂O, as it is on the right side of the arrow.