Group 2 Metals

Question 1

Reaction of group 2 with water

Answer 1

React to form metal hydroxides(alkaline solution) and hydrogen gas

Question 2

How does reactivity change down the group

Answer 2

Increases down the group

Question 3

Reaction of group 2 with steam

Answer 3

React readily with steam forming metal oxides and hydrogen gas

Question 4

How does solubility of group 2 hydroxides change down the group

Answer 4

Increasing solubility with magnesium hydroxide insoluble

Question 5

How does solubility of group 2 sulphates change down the group

Answer 5

Solubility decreases with barium sulphate insoluble

Question 6

How does first ionisation energy change down group 2

Answer 6

Decreases due to increase in atomic radius and shielding meaning less energy is required for an electron to be removed, outweighs increase in atomic charge

Question 7

Reaction of group 2 metals and chlorine

Answer 7

All form metal chlorides(metal precipitates)

Question 8

Reaction of group two metals with oxygen

Answer 8

Form metal oxides

Question 9

Reaction of strontium and barium with excess oxygen and heat energy

Answer 9

Can react to form metal peroxides (XO2)

Question 10

Reaction of group two hydroxides with dilute acids

Answer 10

Form salt and water, is a neutralisation reaction

Question 11

Which element is the exception to the solubility rules

Answer 11

Beryllium

Question 12

Why is barium sulfate used in barium meals

Answer 12

-used as medical tracer as is insoluble so does not enter bloodstream which would be toxic