Element, 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 substance formed when two or more different elements are chemically bonded together. Compounds can be broken down into simpler substances by chemical reactions.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded. The individual substances retain their own properties.

Front

What is the difference between elements and compounds?

Back

Elements contain only one kind of atom, while compounds contain two or more different kinds of atoms.

Front

Can elements be separated by physical means?

Back

No, elements cannot be separated by physical means.

Front

Can compounds be separated by physical means?

Back

No, compounds cannot be separated by physical means; they can only be separated by chemical reactions.

Front

What is an example of an element?

Back

Gold (Au) is an example of an element.

Front

What is an example of a compound?

Back

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

Front

What is an example of a mixture?

Back

Salad is an example of a mixture, as it contains various ingredients that are not chemically bonded.

Front

What does it mean for a substance to be pure?

Back

A pure substance is made of only one type of particle and has a uniform composition throughout.