Essential GCSE Flashcards
(40 cards)
1
Q
group 1 elements
A
form +1 ions
2
Q
group 2 elements
A
form +2 ions
3
Q
group 3 elements
A
form +3 ions
4
Q
group 4 elements
A
rarely form ions
5
Q
group 5 elements
A
form -3 ions
6
Q
group 6 ions
A
form -2 ions
7
Q
group 7 ions
A
form -1 ions
8
Q
group 0 elements
A
don’t form ions
9
Q
hydrogen
A
h+
10
Q
ammonium
A
nh4+
11
Q
silver
A
ag+
12
Q
lead (II)
A
pb2+
13
Q
zinc
A
zn2+
14
Q
iron (II)
A
Fe2+
15
Q
copper (II)
A
cu2+
16
Q
hydroxide
A
OH-
17
Q
nitrate
A
no3-
18
Q
sulphate
A
so42-
19
Q
sulphite
A
so32-
20
Q
carbonate
A
co32-
21
Q
hydrogencarbonate
A
hco3-
22
Q
phosphate
A
po43-
23
Q
ethanoate
A
ch3co2-
24
Q
hydrogen element
A
h2
25
hydrogen peroxide
h2o2
26
sulphur dioxide
so2
27
methane
ch4
28
ammonia
nh3
29
acid + alkali
salt + water
30
acid + base
salt + water
31
acid + metal
salt + hydrogen
32
acid + carbonate
salt + water + carbonate
33
acids release
h+ ions in aqueous solution
34
alkalis release
oh- ions in aqueous solution
35
a base is
a substance that neutralises an acid. metal oxides and metal hydroxides are bases
36
a salt is
formed by replacing the h+ ion in an acid with another positive ion
37
sulphuric acid
h2so4
38
nitric acid
hno3
39
hydrochloric acid
hack
40
ethanoic acid
ch3cooh
