Chemical Equations

Front

What are the substances listed on the left side of a chemical equation called?

Back

Reactants

Front

Which of the following reactions is balanced? 1) 2CH₄ + O₂ -> CO₂ + H₂O 2) CH₄ + 2O₂ -> CO₂ + H₂O 3) CH₄ + 2O₂ -> CO₂ + 2H₂O 4) None of the chemical equations are balanced.

Back

CH₄ + 2O₂ -> CO₂ + 2H₂O

Front

What is the Law of Conservation of Matter?

Back

Matter cannot be created or destroyed, it only rearranges.

Front

How many Sodium (Na) atoms are in 6NaCl?

Back

6

Front

How many Aluminum (Al) atoms are in Al₂O₃?

Back

2

Front

What is a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What are products in a chemical equation?

Back

Substances formed as a result of a chemical reaction, found on the right side of the equation.

Front

What does it mean to balance a chemical equation?

Back

To ensure that the number of atoms of each element is the same on both sides of the equation.

Front

What is a coefficient in a chemical equation?

Back

A number placed in front of a chemical formula to indicate how many molecules or moles are involved.

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during a chemical reaction, found on the left side of the equation.