2️⃣Oxygen Flashcards
1
Q
What is the composition of the air?
A
Oxygen 21%
Nitogen 79%
Argon 0.9%
Carbon dioxide 0.04%
2
Q
3 properties of oxygen
A
colourless, odourless, gas
3
Q
word equation for respiration
A
sugar + oxygen = carbon dioxide + water + energy
4
Q
what are the 2 products of the reaction when candle wax combusts
A
carbon dioxide and oxygen
5
Q
what is the equation for oxygen preparation?
A
manganese dioxide
hydrogen peroxide ———> water + oxygen
6
Q
What chemicals are required for the preparation of oxygen
A
Hydrogen peroxide
catalyst
