Question

____ are the elements and compounds that go into a reaction. options (in colored boxes): products, ingredients, reactants, molecules

Explanation:

In a chemical reaction, reactants are defined as the substances (elements or compounds) that participate in the reaction and are consumed or transformed to form products. Products are the result of the reaction, ingredients is a more general term (not specific to chemical reactions), and molecules are the building blocks but not the term for what goes into a reaction. So the correct term for elements and compounds that go into a reaction is reactants.

Answer:

Reactants