Group 2

Question 1

Trend in reactivity in group 2

Answer 1

Increased down the group

Question 2

Trend in atomic radius in group 2

Answer 2

Increased down the group

Question 3

Trend in Ionisation energy in group 2

Answer 3

Decreases down the group

Question 4

Trend in melting point in group 2

Answer 4

Melting point decreases down the group

Question 5

Mg melting point

Answer 5

Lowest melting point in group 2

Arrangement of metallic ions in crystal structure changes

Question 6

Trend of group 2 compound solubility in OH- ions

Answer 6

Solubility increases down the group

Question 7

Trend of group 2 compound solubility in sulphate ions (SO4 2-)

Answer 7

Decreases down the group (BaSO4 insoluble)

Question 8

Used of Barium Sulphate

Answer 8

Barium meal- insoluble so used for soft tissue screening (digestive system) because it’s opaque on X-rays

Question 9

Reaction for the extraction of titanium

Answer 9

TiO2 + 2Cl2 = TiCl4 + O2

TiCl4 + 2Mg = Ti + 2MgCl2

Question 10

Reactions for removing SO2 from flue gas

Answer 10

CaO + 2H2O + SO2 = CaSO3 + 2H2O

CaCO3 + 2H2O + SO2 = CaCO3 + 2H2O + CO2