Pure Substances and Mixtures

Front

What is the smallest unit of an element that maintains the properties of that element?

Back

Atoms

Front

What is a substance made up of elements that are combined chemically?

Back

Compound

Front

How are elements broadly classified?

Back

Metals, nonmetals, and metalloids.

Front

What is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity?

Back

Pure substance

Front

What is made up of one or more of the same kind of atom chemically combined?

Back

Element

Front

What is the difference between a pure substance and a mixture?

Back

A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

Front

What are the two main types of mixtures?

Back

Homogeneous and heterogeneous mixtures.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout.

Front

What is a heterogeneous mixture?

Back

A mixture that does not have a uniform composition and the individual components can be seen.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound.