Elements, Compounds and Mixtures

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means. Examples include hydrogen (H), oxygen (O), and barium (Ba).

Front

What is a compound?

Back

A substance formed when two or more different atoms bond together. Examples include water (H2O) and sodium chloride (NaCl).

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded. Examples include air and salad.

Front

Is Barium an element, compound, or mixture?

Back

Element.

Front

Is sugar a compound, element, or mixture?

Back

Compound.

Front

What is the chemical formula for water?

Back

H2O.

Front

What type of matter is sodium chloride?

Back

Compound.

Front

What happens when elements combine?

Back

They can form compounds through chemical reactions.

Front

Can compounds be separated into their elements?

Back

Yes, compounds can be broken down into their constituent elements through chemical reactions.

Front

What is the difference between a compound and a mixture?

Back

A compound is a chemical combination of elements, while a mixture is a physical combination of substances.