properties of metals

Question 1

reactivity series

Answer 1

potassium
sodium
lithium
calcium
magnesium
aluminium
(carbon)
zinc
iron
cobalt
nickel 
tin
lead
(hydrogen)
copper 
silver
gold 
platinum

Question 2

thermal decomposition of hydroxides

Answer 2

lithium/group 2 metal hydroxide –> metal oxide + water

group 1 hydroxides don’t decompose

Question 3

thermal decomposition of carbonates

Answer 3

lithium/group 2 carbonates –> metal oxide + carbon dioxide

group 1 carbonates don’t decompose

Question 4

thermal decomposition of nitrates

Answer 4

group 1 nitrates –> metal nitrite + oxygen

other metal nitrates –> metal oxide + nitrogen dioxide + oxygen

Question 5

alloys & their properties (2)

Answer 5

brass (copper + zinc) = stronger & malleable

bronze (copper + tin) = very hard - machines, statues & bells