Metals

Question 1

what are common properties of transition metals?

Answer 1

• can from stable ions in different oxidation states
• often used as catalysts
  -often from coloured compounds
  -unreactive

Question 2

reactivity trend down the group for transition metals?

Answer 2

reactivity increases
as the outer most e- are easier to remove

Question 3

how are most metals extracted?

Answer 3

reaction with o2 to form an oxide

if these are less reactive than carbon they can release metal in a redox reaction - cheap

however if more reactive they will require electrolysis - expensive

Question 4

what is a displacement reaction?

Answer 4

when a less reactive metal is replaced in a compound by the more reactive metal

Question 5

how can we know if the metals will react with acids?

Answer 5

if metals are above hydrogen in the reactivity series

Question 6

what is an alloy and how is it beneficial?

Answer 6

combination of two or more metals to combine properties

means layers can slide over therefore increasing strength of metal

Question 7

what is malleable?

Answer 7

can be easily shaped

Question 8

what is ductile?

Answer 8

can be stretched to form wires

Question 9

uses of Aluminium?

Answer 9

soft and malleable
drink cans
alloyed Al more stronger and used in aerospace industry

Question 10

uses of iron?

Answer 10

soft
can form steel or stainless steel with anti rusting properties
knives

Question 11

uses of gold?

Answer 11

electric circuits as its a good conductor,corrosion resistant and malleable
jewellary

Question 12

uses of silver?

Answer 12

electronics
antimicrobial action for medicine adn sports
jewellary

Question 13

uses of copper?

Answer 13

wires easily conducts electricity
water pipes as its not very reactive
heaters - good conductor

Question 14

uses of titanium?

Answer 14

aerospace and defence industries
temperature resistant material