Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

chemistry igcse 0620 > metals > Flashcards

metals Flashcards

You may prefer our related Brainscape-certified flashcards:
Periodic Table flashcards Chemistry 101 flashcards AP® Chemistry flashcards Organic Chemistry 101 flashcards
1
Q

list 3 physical properties of metals?

A
  1. conducts heat and electricity
  2. high melting and boiling point
  3. malleable and ductile
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

list 3 chemical properties of metals?

A
  1. reacts with water
  2. reacts with acid
  3. reacts with oxygen
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what are the products of reacting a metal with cold water?

A

metal hydroxide + hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what are the products of reacting a metal with steam?

A

metal oxide + hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what are the products of reacting a metal with HCL?

A

a salt + hydrogen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what are the products of reacting a metal with oxygen?

A

a metal oxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

define an alloy

A

a mixture of 2 metals, or one metal and one non metal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

list 3 properties of alloys that are different from the original metals?

A

it is harder
more resistant to corrosion
has a greater melting and boiling point

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

why are alloys harder than their original elements?

A

the combination of different atom sizes together alters the regular arrangement thus it is more difficult to cut through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what combines to produce brass?

A

zinc + copper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what is the use of alloy of iron + tungsten?

A

resistant to high temperatures and are hard

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what is the use of alloy of iron + chromium/nickel?

A

resistant to corrosion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

list the reactivity series

A

Please Stop Calling Me A Cute Zebra I like Her Calling Flowers Guy Ugly Cow Because I Am

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what are the products of thermal decomposition of metal hydroxides/carbonates?

A

metal oxide + water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

does group 1 metal hydroxides undergo thermal decomposition, and why?

A

no, except for lithium. they have high thermal stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

does group 1 metal carbonate undergo thermal decomposition, and why?

A

no, except for lithium. they have high thermal stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what are the products of heating group 1 metal nitrates?

A

metal nitrite + oxygen

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

what are the products of heating any metal nitrate (except group 1 metals)?

A

metal oxide + oxygen + nitrogen dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

why doesn’t aluminium react with water and acid?

A

it reacts firstly with oxygen in the air to form an unreactive protective layer of aluminium oxide around it to prevent any reactions

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

write a balanced chemical reaction of thermal decomposition of nitrogen nitrate

A

2NaNO3 → 2NaNO2 + O2

21
Q

write a balanced chemical reaction of thermal decomposition of copper nitrate

A

2Cu(NO3)2→ 2CuO + 4NO2 + O2

22
Q

which process is used to extract metal above carbon in the reactivity series?

A

electrolysis

23
Q

what is the ore of iron called?

A

hematite Fe2O3

24
Q

what are the raw materials used to extract iron?

A

coke, hematite, limestone and air

25
Q

list all the chemical reactions which take place in the extraction of iron from its ore hematite

A
  1. C + 02 → CO2 (releases heat)
  2. CO2 + C → 2CO (monoxide is toxic and must be removed)
  3. Fe2O3 + 3CO → 2Fe + 3CO2
  4. CaCO3 → CaO + CO2
  5. CaO + SiO2 → CaSiO3
26
Q

why is limestone added to the furnace in the extraction of iron?

A

to remove impurities

27
Q

what is slag in the process of extracting iron?

A

CaSiO3

28
Q

where is the iron kept when it is converted into steel?

A

tilting furnace

29
Q

what is added to convert iron into steel?

A

oxygen + calcium oxide

30
Q

why is oxygen added to iron in the process of its conversion to steel?

A

to oxidise carbon, suplhur, silicon and phosphorus impurities.

  • CO2 and SO2 can escape the furnace as gases.
  • SiO2 reacts with CaO to produce CaSiO3 slag
31
Q

what is iron alloyed with to produce stainless steel?

A

20% chromium and 10% nickel

32
Q

what is stainless steel used in?

A

cutlery and sinks

33
Q

what is the most important property of stainless steel?

A

resistant to corrosion and strong

34
Q

what is iron alloyed with to make tungsten steel?

A

5% tungsten

35
Q

what is tungsten steel used in?

A

edges of cutting tools

36
Q

what is the most important property of tungsten steel?

A

its hard

37
Q

what is iron alloyed with to make maganese steel?

A

13% maganese

38
Q

what is maganese steel used for?

A

drill bits

39
Q

what is the most important property of maganese steel?

A

its very tough

40
Q

which process is used to extract aluminium?

A

electrolysis

41
Q

what is the ore of aluminium?

A

bauxite Al2O3

42
Q

why is cryolite mixed with bauxite in the extraction of aluminium?

A

to decrease its melting point and increase conductivity

43
Q

what is the reaction on the negative electrode (cathode) in the extraction of aluminium?

A

Al3+ + 3e- → Al

44
Q

what are the 2 reactions at the positive electrode (anode) in the extraction of aluminium?

A

2O2- - 4e- → O2

C (s) + O2 → CO2

45
Q

what is the ore of zinc?

A

zinc blende ZnS

46
Q

list all the reactions in the process of extracting zinc from its ore

A
  1. 2ZnS + 3O2 → 2ZnO + 2SO2
  2. C + O2 → CO2
  3. CO2 + C → 2CO (CO2 is the reducing agent)
  4. ZnO(s) + CO(g) →Zn(g) + CO2(g)
47
Q

list 2 uses of zinc

A
  1. galvanisation

2. to make brass

48
Q

list 4 uses of aluminium and a reason for it

A
  1. aeroplane bodies - low density
  2. overhead power cables - conducts electricity
  3. saucepans - conducts heat
  4. food cans - resistant to corrosion
49
Q

list 2 uses of copper and a reason for it

A
  1. electrical wires - conducts electricity

2. water pipes - unreactive with water

chemistry igcse 0620 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions