Oxygene Flashcards
1
Q
How much percentage of the air is made up of oxygen?
A
21%
2
Q
Name three physical properties of oxygene
A
•Colourless
•Odourless
•Gas
3
Q
Name three uses of oxygene
A
Welding torches
Rocket fuel
Breathing apparatus in hospitals
4
Q
What is the word equation for respiration?
A
Sugar + Oxygen -> Carbon Dioxide + Water
5
Q
Describe a chemical test for water
A
Use chemical anhydrous copper sulphate which changes colour from white to blue in presence of water
6
Q
What does the test for oxygene do?
A
It relights a glowing splint
7
Q
Name the chemicals they use in the test for oxygene
A
Hydrogen peroxide+ Manganese dioxide catalyst
8
Q
Name the word equations for the oxygen test
A
Hydrogen peroxide ~> Water+Oxygen
