Chemistry - Air & Oxygen Flashcards
1
Q
Preparation of Oxygen
What is the substance labelled A?
A
It’s Hydrogen Peroxide.
H2O2
2
Q
Preparation of Oxygen
The manganese dioxide speeds up the rate of this reaction but is not used up at the end of the experiment.
What name is given to a substance which acts in this way?
A
CATALYST
3
Q
Two pieces of damp litmus paper were placed in the test tube of oxygen.
Neither one changed colour
Why?
A
Oxygen is Neutral (pH7)
neither acidic nor basic
4
Q
What is this experiment for?
A
Preparation of Oxygen
