821Identify the reactants and

products of a chemical reaction

821: Identify the reactants and products of a chemical reaction

Key concepts/skills: Level 1: Define key vocabulary.

Level 2: Recognize all part of a chemical equation.

Level 3: Distinguish between the reactants and products given chemical equations.

Key vocabularySymbolElementFormula CompoundSubscriptYieldReactantProduct

821: Identify the reactants and products of a chemical reaction

I. Chemical equation – symbols, subscripts, and coefficients that describe what happens during a chemical reaction

821: Identify the reactants and products of a chemical reaction

A. Reactants – substances that combine in the chemical reaction

B. Reactants are always on the left side of the arrow (sometimes separated by + sign)

821: Identify the reactants and products of a chemical reaction

C. Products – substances created by the chemical reaction

D. Products are always on the right side of the equation (sometimes separated by + sign)

821: Identify the reactants and products of a chemical reaction

E. The arrow (yield sign) separates the formulas of the reactants from the

formulas of the products (means “produces”)

821: Identify the reactants and products of a chemical reaction

F. Subscripts – number on the lower right of the symbol that tells how many atoms in the formula

821: Identify the reactants and products of a chemical reaction

821: Identify the reactants and products of a chemical reaction