inorganic chemistry Flashcards

1
Q

potassium chloride flame test colour

A

lilac

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

copper chloride flame test colour

A

bluey greeny

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

calcium chloride flame test colour

A

red

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

lithium chloride flame test colour

A

pink

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

sodium chloride flame test colour

A

orange

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

with what and why do we clean the wire?

A
  • clean with hydrochloric acid (HCl)
  • cleans the wire to remove any impurities. also allows the ions to stick onto the wire
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

soluble or insoluble - all nitrates

A

soluble

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

soluble or insoluble - most common chlorides

A

soluble

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

soluble or insoluble - most common sulphates

A

soluble

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

soluble or insoluble - lead + silver chloride

A

insoluble

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

soluble or insoluble - sodium, potassium, ammonium, sometimes calcium hydroxide

A

soluble

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

soluble or insoluble - most metal hydroxides

A

insoluble (sometimes almost)

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

soluble or insoluble - sodium potassium and ammonium compounds

A

soluble

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

soluble or insoluble - lead sulphate, barium, silver and calcium

A

insoluble

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

soluble or insoluble - sodium, potassium, ammonium carbonates

A

soluble

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

hydrogen gas test

A

put a lit splint near the test tube
if hydrogen is present, a squeaky pop should occur

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

oxygen gas test

A

glowing (not lit) splint put near the test tube
if oxygen is present, the splint should be set alight

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

carbon dioxide gas test

A

bubble the gas through and aqueous solution of calcium hydroxide (aka limewater)
if carbon dioxide is present, limewater should turn milky

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

chlorine gas test

A

damp litmus paper over test tube
if chlorine gas is present, the litmus paper bleaches and turns white

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

ammonia gas test

A

damp red litmus paper/universal indicator over test tube
if ammonia gas is present, the red litmus paper turns blue

21
Q

water physical test

A

boil/freeze it at 100°C
its water if it freezes/boils

22
Q

water chemical test

A

add anhydrous copper to water
if water is present it turns blue

23
Q

blue litmus paper in acid

A

red

24
Q

blue litmus paper in alkali

A

blue

25
Q

red litmus paper in acid

A

red

26
Q

red litmus paper in alkali

A

blue

27
Q

universal indicator in acid

A

red-yellow

28
Q

universal indicator in alkali

A

blue-purple

29
Q

phenolphthalein in acid

A

no colour

30
Q

phenolphthalein in alkali

A

pink

31
Q

methyl orange in acid

A

red

32
Q

methyl orange in alkali

A

yellow

33
Q

precipitate results of NaOH and Cu2+

A

COPPER HYDROXIDE (II) (blue)

34
Q

general ionic equation

A

Mx+ + XOH -> M(OH)

35
Q

precipitate results of NaOH and Fe2+

A

IRON HYDROXIDE (II) (green)

36
Q

precipitate results of NaOH and Fe3+

A

IRON HYDROXIDE (III) (orangey brown)

37
Q

precipitate results of NaOH and NH4+

A

AMMONIA GAS (did not precipitate)

38
Q

precipitation reaction?

A

soluble + soluble -> insoluble salt

39
Q

acid and a metal oxide reaction?

A

acid + metal oxides -> salt + water

40
Q

what are alkalis (in terms of bases)

A

bases that dissolve in water

41
Q

chlorine colour

A

yellow-green

42
Q

bromine colour

A

red-brown

43
Q

iodine colour

A

purple

44
Q

trends in group 7

A

gas -> liquid -> solid as you go down
increasing melting + boiling point
less reactive as you go down

45
Q

why do halogens become less reactive the more you go down

A

since the halogens react by gaining an electron on the outer shell:

  • outer shell becomes further from the nucleus
  • electron shielding increases
  • attraction decreases between nucleus and outer electrons
  • electrons are gained less easily
  • halogens become less reactive
46
Q

approximate percentages of gases abundant (theres four of them)

A

78% nitrogen

47
Q

practical: determine the approximate percentage by volume of oxygen in the air using a metal or non-metal

A
48
Q

oxygen percentage in the air formula

A

𝓳𝓾𝓼𝓽 𝓪 𝓵𝓸𝓸𝓴 𝓲𝓷𝓽𝓸 𝓶𝔂 𝓼𝓲𝓬𝓴 𝓪𝓷𝓭 𝓽𝔀𝓲𝓼𝓽𝓮𝓭 𝓶𝓲𝓷𝓭