Answer the following question given this paragraph: 

Equations in chemistry must balance. There must be the same number of each type of atom in the products as there is in the reactants. Coefficients are used to balance chemical equations. They show how many atoms or molecules of a substance are involved in a reaction.


Q: In science, coefficients are used to balance what kind of equations?

 Choices:

- liquid

- isolated

- mineral

- chemical

A:
chemical
