Molecular Compounds

Question 1

What is a molecular compound?

Answer 1

Pure substances formed from two or more non-metals

Question 2

What are examples of molecular compounds?

Answer 2

Sugar and Water

Question 3

How do molecular compounds join together?

Answer 3

By sharing valence electrons between non-metal atoms

Question 4

What is a diatomic molecule?

Answer 4

A molecule that consists of only two of either the same of different elements.

Oxygen 02
Hydrogen H2

Question 5

What are three conclusions that can be made about molecular compounds?

Answer 5

• they don’t conduct electricity
• they have low melting points
• they aren’t soluble

Question 6

What is the difference between ionic and molecular compounds?

Answer 6

Ionic compounds are formed with one metal ion (cation) and one non metal ion (anion) that join together by exchanging electrons (ionic bond).
They conduct electricity, are soluble in water and they have high melting points.

Molecular compounds are formed with two non metals that join together by sharing electrons (covalent bond).
They don’t conduct electricity, aren’t soluble in water and have low melting points.

Question 7

How do you name molecular compounds?

Answer 7

Add the prefix to the name of the compound.

Mono - 1
Di - 2
Tri - 3
Tetra - 4
Penta - 5 

Carbon dioxide CO2