Balancing Equations Review

Front

Endo means in or _______.

Back

absorbed

Front

The substances listed on the left side of a chemical equation are the _______.

Back

Reactants

Front

Chemical equations are balanced with numbers called _______.

Back

coefficients

Front

_____ reactions usually feel hot!

Back

exothermic

Front

How many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2O3?

Back

4

Front

What is the definition of a chemical equation?

Back

A representation of a chemical reaction using symbols and formulas.

Front

What do coefficients in a chemical equation represent?

Back

The number of molecules or moles of a substance.

Front

What is the difference between reactants and products?

Back

Reactants are substances that start a chemical reaction, while products are substances formed as a result.

Front

What is an exothermic reaction?

Back

A reaction that releases energy, usually in the form of heat.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.