balanced or unbalanced chemical equations

Front

What are the small numbers in a chemical formula called?

Back

Subscripts

Front

What is the term for the substances produced in a chemical reaction, found to the right of the arrow in a chemical equation?

Back

Products

Front

How can you determine if a chemical equation is balanced?

Back

A chemical equation is balanced if the number of atoms of each element is the same on both sides of the equation.

Front

What does it mean if a chemical equation is unbalanced?

Back

An unbalanced chemical equation has a different number of atoms of one or more elements on each side of the equation.

Front

In the equation 2Fe + 3Cl2 -> FeCl3, is the equation balanced or unbalanced?

Back

Unbalanced

Front

In the equation H4 + O2 -> 2H2O, is the equation balanced or unbalanced?

Back

Balanced

Front

In the equation Ag + O2 -> 2Ag2O, is the equation balanced or unbalanced?

Back

Unbalanced

Front

What is the purpose of balancing a chemical equation?

Back

The purpose is to obey the law of conservation of mass, ensuring that matter is neither created nor destroyed.

Front

What is a reactant in a chemical equation?

Back

A reactant is a substance that undergoes a chemical change in a reaction, found to the left of the arrow.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.