Elements and Compounds

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 elements are chemically bonded together. Compounds have different properties than the elements that make them up.

Front

Give an example of an element.

Back

Hydrogen (H) is an example of an element.

Front

Give an example of a compound.

Back

Water (H2O) is an example of a compound.

Front

What distinguishes compounds from elements?

Back

Compounds are combinations of two or more different elements, while elements consist of only one type of atom.

Front

Can elements be broken down into simpler substances?

Back

No, elements cannot be broken down into simpler substances.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H2O.

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl.

Front

What are the two main categories of substances in chemistry?

Back

The two main categories are elements and compounds.

Front

What is a pure substance?

Back

A pure substance is a material that has a constant composition and consistent properties throughout.