Covalent Bonds

How do covalent bonds form?

• Donating & receiving valence electrons between atoms.

• Opposite slight charges attract each other between compounds.

• Scientists are still not sure how they form.

• Sharing valence electrons between atoms.

Why do all bonds form?

• to fill the outermost energy level

• so an atom can be unstable

• so the number of protons and electrons can equal.

• so they can gain neutrons.

What two types of atoms make a covalent bond?

• 2 Nonmetals

• 1 Nonmetal and 1 Metal

• 2 Metals

• 2 Noble Gases

Ionic bonds are between

• metals and nonmetals

• 2 metals

• 2 nonmetals

The chemical bond formed when two atoms share electrons  is called a(an) IONIC bond. 

• True
• False

Covalent bonds usually form when a nonmetal combines with a(an) METAL.

• True
• False

What is the correct formula for this molecule?

• NH
• N₃H
• NH₃
• NH₄

Which of the following is NOT formed by a covalent bond?

• K₂S

• H₂O

• I₂

• CO₂

How many are shared in a double bond?

• 2

• 4 pairs

• 6

• 4

A Nitrogen molecule (N2) has one triple bond. How many electrons do the nitrogen atoms share?

• 1
  1
• 3
• 4
• 6