Question

1. when balancing a chemical equation, what is it appropriate to change?

a. the chemical formulas of reactants and products
b. the coefficients of reactants and products
c. the types of reactants and products
d. the physical states of reactants and products

Explanation:

When balancing a chemical equation, we aim to make the number of atoms of each element equal on both sides. We do this by changing the coefficients (the numbers in front of the chemical formulas). Changing the chemical formulas (option a) would change the substances involved, which is incorrect. Changing the types of reactants and products (option c) is also wrong as it alters the reaction itself. The physical states (option d) are just descriptive and not what we change for balancing.

Answer:

B. The coefficients of reactants and products