Elements, Compounds, Mixtures

Front

What is a substance made up of two or more chemically combined elements called?

Back

A compound.

Front

What do we call a substance that cannot be broken down into any other substance by ordinary chemical means?

Back

An element.

Front

What is a pure substance?

Back

A pure substance is an element or a compound.

Front

What is NaHCO3 an example of?

Back

A compound.

Front

What is a substance made of only one type of atom called?

Back

An element.

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 elements chemically combined.

Front

Can compounds be broken down into simpler substances?

Back

Yes, compounds can be broken down into their constituent elements by chemical means.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically combined.

Front

Give an example of a mixture.

Back

Air is an example of a mixture, as it contains various gases that are not chemically combined.

Front

What is the main characteristic of a homogeneous mixture?

Back

A homogeneous mixture has a uniform composition throughout.