Reactivity

Question 1

Group 1 metal + water

Answer 1

• 2Li + 2H2O —> 2LiOH + H2

- Group 1 metal + water —> metal hydroxide + hydrogen

Question 2

Group 1 metal + oxygen

Answer 2

2Li (s) + O (g) —> Li2O (s)

Group 1 metal + oxygen —> metal oxide

Question 3

Group 1 metal + halogen

Answer 3

2Li (s) + Cl2 (g) —> 2Licl (s)

Group one metal + halogen —> metal halide

Question 4

Group 2 metal + water (l)

Answer 4

2Mg (s) + 2H2O (l) —> 2Mg(OH) (aq) + H2 (g)

Group 2 metal + water —> metal hydroxide + hydrogen

Question 5

Group 2 metal + water (g)

Answer 5

Ca (s) + H2O (g) —> CaO + H2

Group 2 metal + water vapour —> metal oxide + hydrogen

Question 6

Group 2 metal + oxygen

Answer 6

2Mg (s) + O2 (g) —> 2MgO (s)

Group 2 metal + oxygen —> Metal Oxide

Question 7

Group 2 metal + halogen

Answer 7

Mg (s) + I2 (g) —> MgI2 (s)

Question 8

Halogen + hydrogen

Answer 8

Cl2 (g) + H2 (g) —> 2HCl

Chlorine + hydrogen —> Hydrogen Chloride

Question 9

Halogen + alkali metal

Answer 9

Br2 + 2K —> 2KBr

Bromine + potassium —> Potassium Bromide

Question 10

Halogen + Alkali earth metal

Answer 10

2Ca + Cl2 —> 2CaCl

Calcium + chlorine —> Calcium Chloride