Group 1, 2 & 7

Question 1

Descending groups 1 and 2

Answer 1

↑reactivity
↑radii

↓bond strength
↓melting points and strength

Question 2

Reactions with H₂O

Answer 2

Form alkaline hydroxides + H₂

Question 3

Reactions with O₂

Answer 3

Form ionic, basic oxides

Oxides dissolve in H₂O, forming alkaline hydroxide solutions

Oxides react with acids to form salts

Question 4

Heavier group 1 metals

Answer 4

Can form peroxides with O₂2- anions

Can form super oxides with O₂- anions

Question 5

Group 2 metals

Answer 5

Can form ionic chlorides with Cl₂

Question 6

Group 2 hydroxide and sulfate solubility

Answer 6

Descending hydroxides = ↑solubility

Sulphates = ↓solubility

Question 7

Group 2 carbonates

Answer 7

Decompose into oxides and CO2

Mg and calcium carbonate react with strong acids to produce this

Question 8

Be exceptions

Answer 8

Doesn’t react with O2 to form oxide

Its hydroxide reacts with acids AND bases

Its solid state chlorode is covalent

Question 9

Descending group 7

Answer 9

↑atomic radii
↑shielding
↑van der waals forces
↑boiling point

↓oxidising power
↓electronegativity
↓nuclear attraction

Question 10

Halide ions

Answer 10

Become increasingly strong reducing agents down-group

Question 11

Hydrogen halides

Answer 11

HX
Covalent
HF = ↑boiling point, weak acid, stronger bonds

Most are strong acids