Chemical Formulas

This appears on the left side of a chemical formula, and represents how many molecules there are.

• an atom

• the subscript

• a molecule

• the coefficient

How many nitrogen atoms are there?

• 4

• 8

• 10

• 20

Tags

NGSS.MS-PS1-1

In the formula for calcium chloride, CaCl₂, there are ___ atoms of chlorine in a formula unit.

• 1

• 2

• 3

• it is estimated in the billions, but we're not sure

Tags

NGSS.MS-PS1-1

The formula for caffeine is C₈H₁₀N₄O₂. There are ___ nitrogen atoms in a molecule.

• 4

• 8

• 2

• 10

Tags

NGSS.MS-PS1-1

In the formula for calcium chloride, CaCl₂, there are ___ atoms of calcium in a formula unit.

• 1

• 2

• 3

• it cannot be determined by current science

Tags

NGSS.MS-PS1-1

The compound calcium chloride, CaCl₂,uses _______ bonds to hold the atoms together.

• metallic

• ionic

• covalent

• intrinsic

The formula for sulfur trioxide is SO₃. There are ___ atoms of sulfur in a molecule.

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

The formula for sulfur trioxide is SO₃. There are ___ atoms of oxygen in a molecule.

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

Sulfur trioxide,SO₃, uses _______ bonds to hold the atoms together.

• metallic

• ionic

• covalent

• transcendental

Tags

NGSS.MS-PS1-1

In the formula for sodium sulfate, Na₂SO₄, there are ___ different elements present.

• 1

• 2

• 3

• 5

Tags

NGSS.MS-PS1-1