Chemistry - Exploring science 9 revision

Wood, sand, air, gold are examples of:

• natural materials

• metals

• synthetic materials

Ceramics, paper, vulcanized rubber are examples of:

• natural materials

• metals

• synthetic materials

Which material has the best electrical conductivity?

• Bamboo

• Copper

• PVC

• Bricks

Solid material:

• fixed volume and fixed shape

• fixed volume but shape varies

• volume and shape vary

• fixed shape but volume varies

Liquid material

• Fixed volume and fixed shape

• fixed volume but shape varies

• volume and shape vary

• fixed shape but volume varies

Gas material:

• fixed volume and fixed shape

• fixed volume but shape varies

• volume and shape vary

• fixed shape but volume varies

Pick the two best heat insulators in this list (more than one answer!)

• china

• bricks

• copper

• iron

Pick 2 properties of ceramics (more than one answer!)

• electrical conductors

• hard

• brittle

• elastic

Pick 3 examples of polymers (more than one answer!)

• Magnesium

• rubber

• PVC

• poly(ethene)

• platinum

Pick all materials used to make concrete (more than one answer!)

• cement

• water

• aggregate

• sand