Elements, Compounds, and Mixtures

Front

What is a compound?

Back

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

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

Can a compound be broken down into its elements?

Back

Yes, a compound can be broken down into its constituent elements through chemical reactions.

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

Is water (H2O) a compound or an element?

Back

Water (H2O) is a compound because it consists of two hydrogen atoms and one oxygen atom chemically bonded together.

Front

Is oxygen (O2) an element or a compound?

Back

Oxygen (O2) is an element because it consists of only one type of atom.

Front

What cannot be broken down into other substances?

Back

An element cannot be broken down into other substances.

Front

Give an example of a compound.

Back

An example of a compound is sodium chloride (NaCl), commonly known as table salt.

Front

Give an example of a mixture.

Back

An example of a mixture is air, which contains various gases like nitrogen, oxygen, and carbon dioxide.

Front

What is the difference between a compound and a mixture?

Back

A compound is made of two or more elements chemically bonded, while a mixture is made of two or more substances that are physically combined.