Question

balancing chemical equations assignment
part 1: key concepts
reactant

product

coefficient

subscript

what law/principle does this relate to?

Explanation:

A reactant is a substance that takes part in and undergoes change during a chemical reaction. A product is a substance that is formed as the result of a chemical reaction. A coefficient is a number placed in front of a chemical formula in a balanced chemical equation to indicate the number of molecules or formula - units of that substance involved in the reaction. A subscript is a number written below and to the right of a chemical symbol in a chemical formula, indicating the number of atoms of that element in the molecule. Balancing chemical equations relates to the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction.

Answer:

Reactant: A substance in a chemical reaction that changes.
Product: A substance formed in a chemical reaction.
Coefficient: A number before a chemical formula in a balanced equation.
Subscript: A number below and to the right of a chemical symbol in a formula.
What law/principle does this relate to?: Law of conservation of mass.