Chemistry equations Flashcards
Know these equations and compounds
1
Q
Avogadro’s constant
A
6.02 x 10 to the power of twenty three
2
Q
Triangle 1
A
Mass = number of moles x mass of one mole
3
Q
Triangle 2 (gas)
A
Volume= amount of moles x 24dm cubed
4
Q
Triangle 3 (concentration)
A
Moles= concentration x volume
5
Q
Percentage yield
A
Actual yield/ theoretical yield
6
Q
Percentage purity
A
Mass of pure substance/ total mass of substance
7
Q
Electrolysis?
A
Using electricity to break down ionic compounds
Anode: +
Cathode: -
8
Q
Physical changes properties
A
No new substances are formed
Easily reversible
Normally there’s a change of state
9
Q
Chemical changes properties
A
New substances are made
Not easily reversed
10
Q
Ammomiunn
A
NH+1 4
11
Q
Hydrogencarbonate
A
HCO-1 3
12
Q
Hydroxide
A
OH-1
13
Q
Nitrate
A
NO-1 3
14
Q
Sulfide
A
S-1 2
15
Q
Sulphate
A
SO-2 4
