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Flashcards in C2d-Making Cars Deck (18)
1

What is oxidation?

The addition of oxygen or reaction of a substance with oxygen

2

What effect does salt water and acid rain have on rusting ?

It speeds up rusting

3

Why is rusting an oxidation reaction?

Iron reacts with oxygen forming an oxide

4

What is the word equation for rusting?

Iron + oxygen + water --> hydrated iron(III) oxide

5

Why doesn't aluminium corrode when its wet?

Aluminium reacts quickly with oxygen in air
Forms aluminium oxide, a protective layer
Aluminium oxide sticks to aluminium and stops any further reaction taking place

6

What are the properties of iron and aluminium?

Both malleable
Both good electrical conductors
Iron more dense
Iron more magnetic
Iron corrodes easily

7

Why is steel better than iron?

Harder
Stronger
Less likely to corrode

8

What are the advantages of building car bodies out of aluminium?

Lighter - better fuel economy
Corrodes less - longer lifetime

9

What is a disadvantage of using aluminium?

Expensive

10

Why is steel used in building cars?

Strong
Can be hammered into sheets and welded together
Bodywork

11

Why is aluminium used in building cars?

Strong
low density
Used for parts of engine
Reduces weight

12

Why is glass used in building cars?

Transparent
Windscreens
Windows

13

Why are plastics used in building cars?

Light
Hardwearing
Electrical insulators
Internal coverings for doors
Dashboards
Cover electrical wires

14

Why are fibres used in building cars?

Natural synthetic
Hard wearing
Seats
Floor

15

What are the advantages of recycling materials?

Saves natural resources
Reduces disposal problems

16

What are the disadvantages of recycling materials?

They have to be separated before they can be recycled

17

Why do laws say 95% of cars must be recyclable?

Save natural resources
Save money
Reduce landfill use

18

What does rusting need?

Iron
Water
Oxygen