KS3C9-LP5 - Extracting Metals(KS3)

Define an 'Alloy'

• a) 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 'Haematite' ore 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.

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.

What two substances are reacted during the laboratory smelting of Copper?

• a) Carbon + Copper
• b) Carbon Dioxide + Copper
• c) Carbon + Copper Oxide
• d) Copper Oxide + Carbon Dioxide

Which is not required during the laboratory smelting of Copper?

• a) A beaker of cold water nearby to extinguish the reaction in an emergency
• b) Use two bunsen burners to deliver extreme heat
• c) Use Sodium Hydroxide to further purify the Copper by removing the excess Copper oxide.
• d) Decant off the excess black powder from the copper.