counting atoms

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Front

Which is larger: an atom or a molecule?

Back

A molecule is larger than an atom.

Front

How many atoms are in a molecule of water (H2O)?

Back

There are 3 atoms in a water molecule: 2 hydrogen atoms and 1 oxygen atom.

Front

What is the chemical symbol for carbon?

Back

The chemical symbol for carbon is C.

Front

How many atoms of carbon are in a molecule of propane (C3H8)?

Back

There are 3 atoms of carbon in a propane molecule.

Front

What is a bond in chemistry?

Back

A bond is a lasting attraction between atoms that enables the formation of chemical compounds.

Front

How many bonds are in a molecule of ammonia (NH3)?

Back

There are 3 bonds in a molecule of ammonia.

Front

What is the chemical formula for propyne?

Back

The chemical formula for propyne is C3H4.

Front

How many bonds are in a molecule of propyne?

Back

There are 7 bonds in a molecule of propyne.