C1.3 Metals and Their Uses Flashcards Preview

GCSE Chemistry AQA > C1.3 Metals and Their Uses > Flashcards

Flashcards in C1.3 Metals and Their Uses Deck (18):
1

Name the two main methods of extracting metals

Reduction and Electrolysis

2

Name two metals which can be reduced by carbon

Zinc, Iron, Tin, Copper, Lead

3

Why can iron be reduced by carbon?

Because iron is less reactive than carbon/carbon is more reactive than iron

4

Define the term reduction

The removal of oxygen from a compound (or loss of electrons)

5

Why can aluminium not be reduced by carbon?

It is more reactive than carbon

6

What is an alloy?

A metal mixed with other elements

7

Why is pure iron generally not used in construction?

It is too soft

8

Name an environmental impact of extracting metal in a blast furnace?

It produces carbon dioxide which causes global warming/ocean rising/melting polar ice caps.

9

What method is used to purify impure copper?

Electrolysis

10

Name a disadvantage of extracting copper with smelting and electrolysis?

Costs a lot of money/can produce sulphur dioxide which causes acid rain

11

What is the process used to extract copper with bacteria?

Bioleaching

12

What is the process used to extract copper with plants?

Phytomining

13

Name two properties which make copper useful for electrical wiring?

Conducts electricity
Ductile (can be drawn into wires)

14

Name two properties which make copper useful for making water pipes?

Good conductor of heat
Unreactive with water
Malleable (can be bent or hammered into shape)

15

What property makes aluminium useful for aircraft?

low density/lightweight

16

Write a word equation for the reaction of iron with copper sulphate?

iron + copper sulphate --> iron sulphate + copper

17

Name an advantage of recycling

Costs less money/uses less energy/

18

Suggest an environmental problem from heating copper sulphide ore in air

Produces sulphur dioxide which causes acid rain