Key Stage 3 Science Book 3 Assessments
Obtaining Useful Materials (Orange level)
1. Which of these metals was the first to be extracted from an ore? [1 mark]
a) Copper
b) Lead
c) Gold
d) Aluminium
2. Which gas is produced when a metal carbonate is decomposed by heating? [1 mark]
a) Hydrogen
b) Oxygen
c) Methane
d) Carbon dioxide
3. Which of the following does not happen when magnesium is added to a solution of copper sulfate? [1
mark]
a) The blue colour of the solution disappears
b) An orange-brown solid forms
c) A colourless is given off
d) The magnesium dissolves
4. Why is limestone added to a blast furnace? [1 mark]
a) To reduce iron ore
b) To increase the temperature inside the furnace
c) To separate impurities in the crushed ore
d) To speed up the reduction of iron ore
5. Copper pyrites contains copper sulfide. What must it be changed into before the copper can be
extracted using carbon? [1 mark]
a) Copper carbonate
b) Copper oxide
c) Malachite
d) Copper sulfate
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Key Stage 3 Science Book 3 Assessments
6. Zinc sulfide is roasted in air to produce zinc oxide. Zinc is extracted by heating zinc oxide with carbon.
Which of the following is not produced during this process? [1 mark]
a) Carbon dioxide
b) Nitrogen dioxide
c) Sulfur dioxide
d) Acid rain
7. Place the steps in order, 1-4, to describe what happens during a chemical reaction. [1 mark]
Particles of reactants collide
3
Bonds are broken
4
New bonds are made
2
Product is formed
1
8. Place the steps in order, 1-4, to describe what happens during photosynthesis. [1 mark]
Green leaves absorb energy from the Sun
4
Bonds in carbon dioxide and water are
broken
3
New but slightly weaker bonds are made
1
Glucose and oxygen are formed
2
9. Which two statements about catalysts are true? [1 mark]
a) All chemical substances are catalysts
b) All chemical reactions need a catalyst
c) Catalysts can be recovered after a reaction
d) Catalysts speed up chemical reactions
10. Which two applications might ceramics be useful for? [1 mark]
a) Electrical insulation
b) Electrical conduction
c) Making wash basins and baths
d) Making furniture
© HarperCollinsPublishers 2014
Key Stage 3 Science Book 3 Assessments
11. Why are refractory ceramics used to line kilns? [2 marks]
12. Name two types of natural polymer found in plants. [2 marks]
13. What is the relationship between crude oil and polythene? [2 marks]
14. What are the raw materials needed to make concrete? [2 marks]
15. Tennis rackets used to be made of wood. Why are they are usually made of carbon fibre nowadays?
[2 marks]
16. Why is the ease of thermal decomposition of metal carbonates important in metal extraction? [2
marks]
© HarperCollinsPublishers 2014
Key Stage 3 Science Book 3 Assessments
17. Precious metals are often recycled from discarded computers. The processes involve sorting and
separating, dissolving in suitable acids or other solutions, and electrolysis. What effect might this have
on the environment?
[4 marks]
18. This is a diagram of a froth flotation tank:
Froth flotation is used in the extraction of some metals. What happens in the process is that ground up
ore, oil and water are pumped into the tank. Air is pumped in and the particles of metal gather in the
froth on top of the tank. Explain why this process is used in the mining industry. [4 marks]
© HarperCollinsPublishers 2014