Chemical Reactions

Front

What is a physical change?

Back

A change that does not result in the formation of a new substance. Examples include melting, freezing, and dissolving.

Front

What is an acid?

Back

A substance that has a pH of 0-6.9 and typically has a sour taste. Examples include vinegar and lemon juice.

Front

What is a catalyst?

Back

A substance that speeds up a chemical reaction without being consumed in the process.

Front

What are reactants?

Back

Substances that are combined in a chemical reaction to form products.

Front

What are products in a chemical reaction?

Back

Substances that are formed as a result of a chemical reaction.

Front

What is the law of conservation of mass?

Back

A principle stating that mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical reaction?

Back

A process where reactants are transformed into products, involving the breaking and forming of bonds.

Front

What is a base?

Back

A substance that has a pH of 7.1-14 and typically has a bitter taste and slippery feel. Examples include soap and baking soda.

Front

What is neutral pH?

Back

A pH of 7, indicating a balance between acids and bases, such as pure water.

Front

What happens during combustion?

Back

A chemical reaction that occurs when a substance reacts with oxygen, producing heat and light.