8Ga, Gb and Gc

Which metal would be suitable for all of the following uses?
# Making aircraft bodies
# Making food containers
# Making overhead power cables

• aluminium

• mild steel

• gold

• pure iron

A mixture of different metals is known as

• Metal mix
• cement
• Alloy
• atom

A substance that increases the rate of a reaction without being used up during the reaction is called a

• catalyst

• product

• reactant

• solute

what is a common use for copper

• making jewelry
• making ships
• making pipes
• making radiators

What element in air reacts with Iron to make Iron Oxide

• Carbon
• Oxigen
• Oxygen
• Nitrogen

What two conditions make iron rust

• Water only
• air only
• water and air
• Hydrochloric acid

Which property do all metals have?

• Their boiling points are low.

• Their densities are low.

• They conduct electricity.

• They react with water.

What is corrosion?

• The release of oxygen
• Breakdown of a metal

Iron rust in the presence of:

• Vacuum
• Moisture
• Oxygen
• Moisture and Oxygen

Is this an example of corrosion?

• Yes
• No