Using
Chemistry
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KS3 Unit 9h – Using Chemistry
1
Q1. Name the process
where new chemical
products form from
chemical reactants.
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KS3 Unit 9h – Using Chemistry
2
A1. Reaction
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KS3 Unit 9h – Using Chemistry
3
Q2. Give another word
for burning something in
air.
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KS3 Unit 9h – Using Chemistry
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A2. Combustion
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KS3 Unit 9h – Using Chemistry
5
Q3. What do we call a
rapid expansion of hot
gases as a chemical
reaction takes place.
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KS3 Unit 9h – Using Chemistry
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A3. Explosion
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KS3 Unit 9h – Using Chemistry
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Q4. What do we call a
chemical reaction with
oxygen.
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KS3 Unit 9h – Using Chemistry
8
A4. Oxidation
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KS3 Unit 9h – Using Chemistry
9
Q5. What do we call the
process where we
produce palatable food
by application of heat.
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KS3 Unit 9h – Using Chemistry
10
A5. Cooking
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KS3 Unit 9h – Using Chemistry
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Q6. What do you call the
unwanted reaction
between a metal and the
atmosphere or water.
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KS3 Unit 9h – Using Chemistry
12
A6. Corrosion
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KS3 Unit 9h – Using Chemistry
13
Q7. What do we call a
very long molecule
formed from a string of
identical chemical
building blocks? Often a
type of plastic.
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KS3 Unit 9h – Using Chemistry
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A7. Polymer
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KS3 Unit 9h – Using Chemistry
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Q8. What is a chemical
building block used to
form plastics called?
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KS3 Unit 9h – Using Chemistry
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A8. A monomer
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KS3 Unit 9h – Using Chemistry
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Q9. Name the process
of breaking long chain
hydrocarbon molecules
into more useful short
chain molecules.
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KS3 Unit 9h – Using Chemistry
18
A9. Cracking
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KS3 Unit 9h – Using Chemistry
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Q10. What is the general
name for a polymer like
polythene,
polypropylene, nylon
and polystyrene.
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KS3 Unit 9h – Using Chemistry
20
A10. Plastic
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KS3 Unit 9h – Using Chemistry
21
Q11. Name a fossil fuel
raw material used to
make most plastics.
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KS3 Unit 9h – Using Chemistry
22
A11. Oil
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KS3 Unit 9h – Using Chemistry
23
Q12. What is a portion of
crude oil with a particular
boiling point called?
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KS3 Unit 9h – Using Chemistry
24
A12. A fraction
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KS3 Unit 9h – Using Chemistry
25
Q13. What is the
technique used to
separate liquids with
different boiling points
called?
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KS3 Unit 9h – Using Chemistry
26
A13. Distillation
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KS3 Unit 9h – Using Chemistry
27
Q14. Name the fossil
fuel used in jet aircraft,
also called kerosene.
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KS3 Unit 9h – Using Chemistry
28
A14. Paraffin
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KS3 Unit 9h – Using Chemistry
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Q15. What do we call a
substance that increases
the rate of a chemical
reaction but that is not
used up itself.
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KS3 Unit 9h – Using Chemistry
30
A15. A catalyst
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KS3 Unit 9h – Using Chemistry
31
Q16. What do we call an
atom with an excess
positive or negative
electric charge.
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KS3 Unit 9h – Using Chemistry
32
A16. An ion
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KS3 Unit 9h – Using Chemistry
33
Q17. What do we call a
negative ion that travels
towards the positive
anode?
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KS3 Unit 9h – Using Chemistry
34
A17. An anion
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KS3 Unit 9h – Using Chemistry
35
Q18. What do we call a
positive ion that travels
towards the negative
cathode.
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KS3 Unit 9h – Using Chemistry
36
A18. A cation
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KS3 Unit 9h – Using Chemistry
37
Q19. What do we call a
tiny particle, much lighter
than an atom, that
carries a negative
electric charge?
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KS3 Unit 9h – Using Chemistry
38
A19. An electron
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KS3 Unit 9h – Using Chemistry
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Well Done!
Now check your score
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KS3 Unit 9h – Using Chemistry
40