3.2 Types of Matter

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

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

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

Can a mixture be separated?

Back

Yes, mixtures can be separated by physical means.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A mixture that does not have a uniform composition, such as a salad.

Front

What is the law of conservation of mass?

Back

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