Metals - Sources, Origins and Properties (all questions)

The process used to separate metal in ore from other materials

• callable

• mining

• smelting

• mineralization

A strong, lightweight metal that is the most abundant metal in the earth's crust

• gold

• silver

• aluminum

• ore

Define an 'Alloy'

• ba) A mixture of non-metallic elements
• b) A mixture of metallic elements
• c) A mixture of non-metal and metal elements
• d) A compound of non-metal and metal elements

Examples of alloys include:

• a) Bronze, Copper, Brass
• b) Bronze, Brass, Steel
• c) Gold, Bronze, Brass
• d) Steel, Iron, Rust

Why is 'coke/coal' added to the blast furnace?

• a) To remove impurities of silicon dioxide .
• b) It is the source of Iron.
• c) To provide lots of heat when it is burnt to give sufficient energy that it can overcome the activation energy.
• d) It is the reducing agent that will cause the iron to be reduced.

The amount of mining needed to extract aluminum from ore can be reduced if people...

• Recycle

• Use lead instead of aluminum

• Burn less fossil fuels

• Use less plastic

The process of heating an ore beyond its melting point and combining it with other substances is called...

• Dredging

• Frothing

• Tailing

• Smelting

The clearing and removal of trees from a forested area.

• Ignitability
• Solid Waste
• Garbage
• Deforestation

Unprocessed natural resources used to manufacture or create a range of modern conveniences.

• Raw Materials
• Source Reduction
• Pollution
• Composting

What does ferrous mean?

• It has iron in it
• It doesn’t have iron in it
• It is magnetic
• It is heavy