Chemistry Final Exam Review

Front

What is the mole ratio of H2O to H3PO4 in the reaction P4O10 + 6 H2O -> 4 H3PO4?

Back

6:4

Front

In a chemical reaction, everything to the right of the arrow is called _____________.

Back

Products

Front

The equation 2C3H7OH + 9O2 → 6CO2 + 8H2O is an example of which type of reaction?

Back

Combustion reaction

Front

What is an isotope?

Back

An atom with different amounts of neutrons.

Front

What reaction has the following general formula: AB -> A + B?

Back

Decomposition.

Front

Define a chemical reaction.

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Front

What is a reactant?

Back

A substance that takes part in and undergoes change during a reaction.

Front

What is a product in a chemical reaction?

Back

The substances that are formed as a result of a chemical reaction.

Front

What is the difference between an endothermic and exothermic reaction?

Back

Endothermic reactions absorb heat, while exothermic reactions release heat.