Topic 4- inorganic chemistry and periodic table

Question 1

What is the most reactive metal in group 2

Answer 1

Barium

Question 2

List three physical properties of group 2 metals

Answer 2

High melting and boiling points
Low density metals
Form colourless (white) compounds

Question 3

Does reactivity increase or decrease as you go down group 2

Answer 3

Increase
Electrons are lost easily because of large atomic radius and more shielding

Question 4

What happens to first ionisation energy as you go down group 2

Answer 4

Decrease- number of filled electron shells
Increased shielding

Increased atomic radius—> weaker force between outer electrons and nucleus —-> less energy needed to remove electron

Question 5

Equation for the reaction of calcium and oxygen

Answer 5

2Ca + O2 —> 2Cao

Question 6

Reaction barium and water

Answer 6

Ba +2 H20 —> Ba(oh)2 + H2

Question 7

Products when group 2 oxide reacts with dilute acid

Answer 7

Salt and water

Question 8

Reaction with calcium and hydrochloride acid

Answer 8

CaO +2 HCl —> caCl2 + H20