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Chemistry A level Module 2 > Chapter 2-4 - Atoms, ions and compounds, Amount of substance & Acids and redox > Flashcards

Chapter 2-4 - Atoms, ions and compounds, Amount of substance & Acids and redox Flashcards

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1
Q

Define Isotope

A

An atom of the same element but with a different number of neutrons.

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2
Q

Relative mass of an electron

A

1/1836

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3
Q

Define Orbital

A

A region around the nucleus of an atom that can hold up to 2 electrons with opposite spins.

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4
Q

Equation: number of particles=

A

mol x Av. constant

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5
Q

Equation: Moles=

A

mass / Mr

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6
Q

Equation: conc. =

A

mol / vol

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7
Q

Equation: Volume of gas (RTP)

A

mol x 24

in dm3

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8
Q

Ideal gas equation

A

PV = nRT

V measured in m3

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9
Q

m3 -> dm3

A

x1000

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10
Q

celcius -> Kelvin

A

+ 273

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11
Q

Equation: % yield =

A

Actual / theoretical x100

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12
Q

Equation: Atom economy

A

Mr desired / Mr All x100

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13
Q

Define Relative Atomic Mass

A

The weighted mean mass of an atom of an element relative to 1/12 the mass of an atom of Carbon-12

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14
Q

Define Relative Isotopic Mass

A

The mass of an atom of an isotope relative to 1/12 the mass of an atom of Carbon-12

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15
Q

Define Empirical Formula

A

The simplest whole number ratio of atoms of each element in the compound

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16
Q

Sulfate ion

A

`````2-
SO4

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17
Q

Thiosulfate ion

A

``````2-
S2O3

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18
Q

Tetrathionate ion

A

```````2-
S4O6

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19
Q

Nitrate ion

A

`````-
NO3

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20
Q

Carbonate ion

A

`````2-
CO3

21
Q

Hydrogen Carbonate ion

A

``````-
HCO3

22
Q

Permanganate ion

A

``````-
MnO4

23
Q

Dichromate ion

A

```````2-
Cr2O7

24
Q

Phosphate ion

A

`````3-
PO4

25
Q

Hydroxide ion

A

````-
OH

26
Q

Ammonium ion

A

`````+
NH4

27
Q

Zinc ion

A

`````2+
Zn

28
Q

Silver ion

A

```+
Ag

29
Q

Copper ion

A

````2+
Cu

30
Q

Gold ion

A

````3+
Au

31
Q

Nitric Acid Formula

A

HNO3

32
Q

Sulfuric Acid Fomula

A

H2SO4

33
Q

Phosphoric Acid Fomula

A

H3PO4

34
Q

Ethanoic Acid Fomula

A

CH3COOH

35
Q

Sodium Hydroxide Formula

A

NaOH

36
Q

Calcium Hydroxide Formula

A

Ca(OH)2

37
Q

Ammonia Formula

A

NH3

38
Q

Define Acid

A
  • Proton donor
  • Produces H+ ions in aqueous solution
39
Q

Define Base

A
  • Proton Acceptor
40
Q

Define Alkali

A
  • A soluble base
  • Produces OH- ions in aqueous solution
41
Q

Define Salt

A

A compound where the H+ ion in an acid is replaced by a metal ion or an ammonium ion.

42
Q

Define Strong Acid

A

Dissociates fully in water

43
Q

Define Weak Acid

A

Only dissociates partially in water

44
Q

An example of a weak acid

A

caboxylic acids

45
Q

metal + acid

A

= salt + hydrogen

46
Q

metal oxide + acid

A

= salt + water

47
Q

metal hydroxide + acid

A

= salt + water

48
Q

metal carbonate + acid

A

= salt + water + carbon dioxide

49
Q

how is a salt formed?

A

H+ ion in acid replaced by metal + ion

Chemistry A level Module 2 (2 decks)

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