Pure Substances and Mixtures

Front

What is a mixture?

Back

A mixture contains a variety of elements and compounds that are not chemically combined with each other.

Front

Is oxygen an element, compound, or a mixture?

Back

Oxygen is an element.

Front

What is an element?

Back

An element is made up of one or more of the same kind of atom chemically combined.

Front

What are examples of mixtures?

Back

Dirt and air are examples of mixtures.

Front

What is the chemical symbol for Hydrogen?

Back

The chemical symbol for Hydrogen is H.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout.

Front

What is a compound?

Back

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

Front

Can mixtures be separated?

Back

Yes, mixtures can be separated into their individual components by physical means.

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 is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.