Chemistry - Covelant Bonds

Question 1

Fill in the gaps:
When atoms share _____ of electrons, they form covalent bonds. These bonds are ______ . Substances containing covalent bonds may consist of small molecules, such as ___. When drawing small molecules, you use a ______ line to represent a single covalent bond.

Answer 1

1) Pairs 2)Strong 3) H2 4)Single