Balanicing and Types of Chemical Equations

Front

What does the principle of conservation of mass mean in chemical reactions?

Back

Matter is not created or destroyed.

Front

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

Back

Reactants

Front

What coefficient should be placed in front of the Hydrogen in the equation H₂ + O₂ -> 2 H₂O to balance it?

Back

2

Front

How many sodium atoms are in Na₂CO₃?

Back

2

Front

How many aluminum atoms are in Al₂O₃?

Back

2

Front

What are the substances formed as a result of a chemical reaction called?

Back

Products

Front

What is a balanced chemical equation?

Back

An equation where the number of atoms for each element is the same on both sides.

Front

What is the purpose of coefficients in a chemical equation?

Back

To indicate the number of molecules or moles of a substance.

Front

What does it mean to balance a chemical equation?

Back

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

Front

What is a reactant in a chemical reaction?

Back

A substance that undergoes change during the reaction.