4.1.2 - Group 2 reactions

Question 1

What is formed when a metal from group 2 burns in oxygen?

Answer 1

Metal oxide
e.g Magnesium oxide (MgO)

Question 2

Why does the rate of reaction with group 2 metals and chlorine increase down the group?

Answer 2

Atomic radii increases.
Less attraction between positive nuclei and electrons.
lose electrons more easily.

Question 3

What state does chlorine have to be in to react with group 2 metals?

Answer 3

Gas state

Question 4

What is formed when a metal reacts with chlorine?

Answer 4

Metal chloride
e.g Magnesium chloride (MgCl2)

Question 5

What produces more effervescence in water Magnesium or Calcium?

Answer 5

Calcium as it’s more reactive

Question 6

What is formed when a metal reacts with water?

Answer 6

Metal hydroxide + hydrogen gas

Question 7

What is the big difference between the reaction of calcium with water and the reaction of barium with water?

Answer 7

Calcium hydroxide is solid as it’s only slightly soluble in water.
Barium hydroxide is aqueous as it’s soluble in water.

Question 8

What is formed when magnesium reacts with steam?

Answer 8

Magnesium hydroxide + hydrogen

Question 9

What precautions are taken when handling barium?

Answer 9

Store under oil
Prevent it reacting with oxygen