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AS Chemistry > Moles And Shit > Flashcards

Moles And Shit Flashcards

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0
Q

What is NH4?

A

Is ammonium

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1
Q

What is a mole?

A

A mole is a unit of how many particles there are

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2
Q

What is the charge on ammonium?

A

Positive one

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3
Q

What is ammonium’s formula?

A

NH4

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4
Q

What is CO3

A

Carbonate

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5
Q

What is the formula for carbonate ions?

A

CO3

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6
Q

What is the charge for carbonates?

A

Minus two

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7
Q

What is SO4?

A

Sulphate

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8
Q

What is a sulphate ions formula?

A

SO4

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9
Q

What is the charge on a sulphate?

A

Negative two

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10
Q

What is NO3?

A

Nitrate ion

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11
Q

What is the formula for a nitrate ion?

A

NO3

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12
Q

What is the charge on a nitrate?

A

Negative one

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13
Q

What is an isotope?

A

An atom of an element that has differing amounts of neutrons to other elements

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14
Q

What needs to be calculated elements with different isotopes?

A

A weighted mean mass

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15
Q

What needs to be considered when making a weighted mean mass?

A

The percentage of the different isotopes

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16
Q

What element is used to measure other elements?

A

Carbon 12

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17
Q

What is atomic mass measured in?

A

U (unified atomic mass unit)

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18
Q

How many atomic mass units are in Carbon 12?

A

12

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19
Q

What does carbon 12 weigh?

A

12u

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20
Q

What is the relative isotopic mass?

A

The mass of an isotope compared to the mass of one carbon 12

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21
Q

What is the relative atomic mass?

A

The weighted mean mass of an atom of that element relative to one twelfth of the mass if an atom if carbon twelve.

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22
Q

What is relative molecular mass?

A

The weighted mean mass of a a molecule compared with one twelfth of the mass of carbon Twleve

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23
Q

What is molar mass measured in?

A

Gmol-1

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24
Q

Why do we use moles?

A

Because atoms weigh too little and there is too many to measure

25
Q

How many particles does a mole contain?

A

6.02 x 10^23

26
Q

What is the formula for the number of moles?

A

Mass of what there is / average mole mass

27
Q

What is the unit for the number of moles?

A

G/ gmol^1

28
Q

What is the calculation for moles?

A

N= m/n

29
Q

How can you predict ionic charges for elements?

A

Non metals are negative and metals are positive.

Then use the groups to work out how many they would lose or gain.

30
Q

What are the positive one ions?

A

Ammonium, NH4

31
Q

What are the negative one ions?

A

Hydroxide OH
NITRATE NO3
Nitrite NO2
Hydrogencarbonate HCO3

32
Q

What are the negative two ions?

A

Carbonate CO3
Sulfatr SO4
Sulfite SO3
Dichromate Cr2O7

33
Q

What are the negative three ions?

A

Phosphate PO4

34
Q

What is Hydroxides formula?

A

OH-

35
Q

What is OH-?

A

Hydroxide

36
Q

What is the charge on an oxide?

A

-

37
Q

What is a nitrates formula?

A

NO3-

38
Q

What is NO3-?

A

Nitrate

39
Q

What is a nitrites formula?

A

NO2-

40
Q

What is NO2-?

A

Nitrite

41
Q

What is a Nitrates charge?

A

-

42
Q

What is Nitrates charge?

A

-

43
Q

What is Hydrogencarbonates formula?

A

HCO3-

44
Q

What is HCO3-

A

Hydrogencarbonate

45
Q

What is Hydrogencarbonates charge?

A

-

46
Q

What is a Carbonates formula?

A

CO3 2-

47
Q

What is CO3 2-?

A

Carbonate ion

48
Q

What is the charge on a carbonate?

A

2-

49
Q

What is SO4 2-?

A

Sulfate ion

50
Q

What is a Sulfate ions formula

A

SO4 2-

51
Q

What is the charge on a Sulfate ion?

A

2-

52
Q

What is SO3 2-?

A

Sulfite

53
Q

What is Sulfite ions formula?

A

SO3 2-

54
Q

What is the charge on a sulfite?

A

2-

55
Q

What is Cr2O7 2-?

A

Dichromate ion

56
Q

What is the formula for a Dichromate ion?

A

Cr2O7 2-

57
Q

What is the charge on a Dichromate ion?

A

2-

58
Q

What is PO4 3-?

A

A phosphate ion

59
Q

What is a Phosphate ions formula?

A

PO4 3-

60
Q

What is the charge on a Phosphate ion?

A

3-

AS Chemistry (14 decks)

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