making cars

Question 1

what is most likely used to make cars?

Answer 1

steel or aluminium

Question 2

what is aluminium normally used to make on a car?

Answer 2

the body

Question 3

what is bad about steel

Answer 3

it rusts

Question 4

what does iron need to rust

Answer 4

oxygen and water

Question 5

what is bad about rusting on iron?

Answer 5

the rust flakes off which allows more rust to happen

Question 6

what is addition of oxygen called

Answer 6

oxidation

Question 7

what is reaction of oxygen called?

Answer 7

oxidation

Question 8

what is good about aluminium

Answer 8

it does not corrode when there is water or oxygen present

Question 9

what is rusting?

Answer 9

a chemical reaction between iron, oxygen and water

Question 10

what is the chemical name for rusting?

Answer 10

hydrated iron oxide

Question 11

what is the word equation for rusting?

Answer 11

iron+water+oxygen–rust

Question 12

what is any reaction with oxygen called?

Answer 12

oxidation

Question 13

what is also an increase of rusting?

Answer 13

acid rain and salt water

Question 14

how does aluminium protect itself from rust?

Answer 14

a protective oxide layer forms on the surface which prevents rusting

Question 15

how is this also relevant to iron?

Answer 15

rust is also an oxide layer, however it doesn’t protect the iron. It flakes off

Question 16

what is the pH of acid rain?

Answer 16

lower than 3

Question 17

what conditions does rust normally work best in?`

Answer 17

moist air

Question 18

what is needed for corrosion?

Answer 18

oxygen

Question 19

name 4 materials that are used when making a car

Answer 19

metals and alloys (copper, steel…)
plastics
glass
fibres

Question 20

what does it mean when a material is malleable

Answer 20

it can be beaten into a thin sheet

Question 21

name 3 features of both aluminium and iron

Answer 21

aluminium-
no obvious corrosion
2.7 density
malleable
good electrical conductor
iron-
rusts rapidly
7.9 density
malleable
good conductor
attracted to magnet

Question 22

what is the difference between iron and steel?

Answer 22

steel doesent rust as easily and is harder

Question 23

why is it easy to separate iron from aluminium?

Answer 23

because aluminium is not magnetic

Question 24

what is good about recycling iron and aluminium?

Answer 24

it takes enormous amounts of energy to extract them from their ores
it avoids environmental damage due to mining and quarrying
it reduces rubbish going into landfill

Question 25

name 3 properties that aluminium has and steel doesent and vice versa

Answer 25

steel is stronger and harder
aluminium is malleable 
aluminium does not corrode easily
alu is less dense
steel is cheaper

Question 26

how does recycling benefit us?

Answer 26

it is cheaper. It saves us money and energy. Less non-biodegradable waste being disposed of. Reduced dumping of toxic chemicals