Unit 2 Chemical and Physical Properties

Front

Change from one substance to another is a ______________change

Back

chemical

Front

Substances that are made up of atoms that are all alike are known as ____________

Back

Elements

Front

A substance made of two or more elements chemically combined is called a ____________

Back

Compound

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance, such as melting ice.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances, such as burning wood.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What is density?

Back

Density is the mass of a substance divided by its volume.

Front

Which of the following is a characteristic of a compound?

Back

A compound has a fixed composition and distinct properties.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances.

Front

What is the difference between a physical property and a chemical property?

Back

A physical property can be observed without changing the substance's identity, while a chemical property can only be observed during a chemical reaction.