Elements, Compounds, Mixtures

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a pure substance formed when two or more different elements chemically bond together in fixed proportions.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and properties throughout. It can be an element or a compound.

Front

What distinguishes a mixture from a compound?

Back

A mixture retains the individual properties of its components, while a compound has different properties from the elements that compose it.

Front

What is a homogeneous mixture?

Back

A homogeneous mixture is a mixture that has a uniform composition and appearance throughout, such as saltwater.

Front

What is a heterogeneous mixture?

Back

A heterogeneous mixture is a mixture that consists of visibly different substances or phases, such as a salad.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances by chemical means.

Front

What is an example of a compound?

Back

Water (H2O) is an example of a compound, formed from hydrogen and oxygen.

Front

What is an example of a mixture?

Back

Air is an example of a mixture, as it contains various gases like nitrogen, oxygen, and carbon dioxide.