Chemistry Paper 2: Earth's Resources

Organize these options into the right categories

Groups:

(a) Finite Resource

,

(b) Renewable Resource

• Wood

• Metals

• Rubber

• Uranium

• Fossil Fuels

• Plastic

• Biofuels

Organize these options into the right categories

Groups:

(a) Natural Products

,

(b) Synthetic Products

• Plastic

• Rubber

• Glass

• Wool

• Nylon

• Stone

What is potable water?

• Water from a pot

• Water which is safe to drink

• Water with no impurities in it

• Water which can be put in a pot

Which substances would you NOT find in pure water?

• Bacteria

• Minerals

• Dirt

• Acids

• None of these

How is water sterilised?

• Passing fresh water through filter beds and sterilising

• Removal of salt from sea water

• Reverse osmosis or distillation

• Using chlorine, ozone or ultraviolet light

In what ways can desalination be carried out?

• Passing fresh water through filter beds and sterilising

• Removal of salt from sea water

• Reverse osmosis or distillation

• Using chlorine, ozone or ultraviolet light

What is the main disadvantage of desalination?

• It requires a large amount of energy

• It is carried out at a high pressure

• A low temperature is used

• It has a low atom economy

Reorder the following steps in the processing of fresh water into potable water

• Coarse filter

• Sterilisation (Chlorine, Ozone UV)

• Fine Filter

• Storage

• Sedimentation Tanks

Match the following

• Conical Flask

• Cooling the water causes

• Condenser

• 
• Delivery Tube

• 
• Evaporation / Boiling

• An improvement to the experiment is to add a

• Condensation

• Heating the water causes

Reorder the following method for measuring the mass of solids in a sample of water

• Heat to evaporate the water

• Weigh the vessel and solids

• Weigh the vessel

• Add water to the vessel