Chemical Reactions Review--Lesson 12 & 13

Front

What is a chemical change?

Back

A process where substances combine or break apart to form new substances with different properties.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What happens to a copper penny over time?

Back

It undergoes a chemical change, turning greenish due to oxidation.

Front

What is a chemical reaction?

Back

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

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture when two liquids react.

Front

What is an example of a chemical reaction?

Back

Paper burning is a chemical reaction because it produces new substances.

Front

What is a product in a chemical reaction?

Back

A new substance formed as a result of a chemical reaction.

Front

What is the difference between a reactant and a product?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed.

Front

What is oxidation?

Back

A chemical reaction that involves the loss of electrons, often associated with rusting or tarnishing.

Front

What is combustion?

Back

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