CB1.4 Properties of Substances

Type of particles in copper

• copper ions

• delocalised electrons

• copper oxide molecules

• copper molecules

type of substance for polyethene

• simple covalent molecule

• polymer

• metallic

• ionic

type of particle in silicon dioxide (silica)

• silicon atoms

• oxide ions

• oxygen atoms

• silicon dioxide molecules

Type of particles and attractive forces in carbon dioxide

• metallic bonds

• weak intermolecular forces

• carbon dioxide molecules

• strong ionic bonds

Organize these substances into the right categories

Groups:

(a) Ionic

,

(b) Metallic

,

(c) Molecular

• carbon dioxide

• magnesium oxide

• copper

• gold

• sodium chloride

• silver

• calcium oxide

• water

• ammonia

Reorder the following from lowest to highest density

• polymer

• metallic

• ionic

• simple molecular

• giant network

Name of the type of force holding molecules together

Match the following properties to structrual and bonding features

• no charged particles that can move

• soluble in water

• fewer particles in the same volume

• high melting point

• strong bonds between particles

• low density

• attraction to water molecules favoured

• malleable

• particles can slide over each other

• electrical insulators

Select all ionic substances

• silicon dioxide

• aluminium oxide

• sodium oxide

• carbon dioxide

Metallic substances have

• Directional bonding

• Low thermal conductivity

• Conductive properties

• Delocalised electrons