Science Curriculum

Multiple Choice

In an electron dot diagram, two pairs of shared electrons represents a

• single bond

• double bond

• triple bond

• quadruple bond

Multiple Choice

Compared to ionic compounds, molecular compounds generally have

• stronger chemical bonds

• poor conductivity

• high melting point

• lower densities

Multiple Choice

The chemical bond formed when two atoms share electrons is called an ionic bond.

• true

• false

Multiple Choice

A nitrogen molecule (N_²) has one triple bond. How many electrons do the nitrogen atoms share?

• 1

• 3

• 4

• 6

Multiple Choice

Compared to ionic compounds, molecular compounds generally have

• good conductivity

• greater densities

• more chemical bonds

• low boiling points

Multiple Choice

Covalent bonds usually form when a nonmetal combines with a metal.

• truefa

• false

Multiple Choice

An ion is a neutral group of atoms joined by covalent bonds.

• true

• false

Multiple Choice

If a molecule contains polar bonds, the molecule may or may not be polar overall.

• true

• false

Multiple Choice

In a polar bond, one atom pulls on the shared electrons more than the other atom.

• true

• false

Multiple Choice

The forces between molecules are much stronger than the forces between ions.

• true

• false