Air Flashcards
1
Q
Air is a mixture because:
A
It’s composition varies from place to place
The different gases condense as liquids at different temperatures
2
Q
Cobalt chloride paper
A
Is used to test for the presence of water
3
Q
Limewater
A
Is used to test for carbon dioxide
4
Q
Oxygen is prepared by
A
The breakdown of hydrogen peroxide
5
Q
Carbon dioxide is prepared
A
By the reaction between dilute hydrochloric acid and marble chips
6
Q
Oxygen is used for
A
Breathing
Welding
Burning
7
Q
Carbon dioxide is used in
A
Photosynthesis
Fire extinguishers
Fizzy drinks
8
Q
Air consists of the elements
A
Nitrogen Oxygen Argon And the compounds Carbon dioxide Water vapour
