Book 1B revision

It is the structure of

• sodium chloride

• argon

• caesium chloride

• chlorine

The black balls are carbon atom. It is the structure of

It is the structure of

It is the structure of

It is the structure of

Dry ice contains a regular arrangement of carbon dioxide molecules held closely together by

• strong covalent bonds

• weak covalent bonds

• strong van der Waals’ forces

• weak van der Waals’ forces