2021 Paper 1 Flashcards
1
Q
Shape of buckministerfullerene
A
Sphere
2
Q
2 observations you would see if potassium was added to water
A
Fizzing
Lilac flame
3
Q
Give the reaction that is true for ANY neutralisation reaction
A
H+ + OH- —> H20
4
Q
Why is a the solution warmed in the making salts practical
A
To speed up reaction
5
Q
Why was the magnesium oxide added in excess into hydrochloric acid
A
Make sure all hydrochloric acid reacts
6
Q
Explain difference between electrolysis and chemicals cell
A
Electrolysis uses electricity to produce chemical reactions whereas chemical cell uses chemical reactions to produce electricity
7
Q
What does strong acid mean
A
Fully ionises = low pH
8
Q
What does high concentration mean
A
More acid particles = low pH
