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Zzz- Nat 5 Chemistry > Important > Flashcards

Important Flashcards

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1
Q

How to remember the diatomic elements

A

HINClBrOF

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2
Q

How to remember the Haber Process

A

HAIR

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3
Q

How to remember the Ostwald Process

A

OPEN

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4
Q

Why do ionic compounds conduct when in solution

A

ions are free to move

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5
Q

How to remember REDOX

A

OILRIG

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6
Q

What does HINClBrOF stand for

A

Hydrogen
Iodine
Chlorine
Bromine
Oxygen
Fluorine

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7
Q

What does HAIR stand for

A

Haber
Ammonia
Iron
Reversible

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8
Q

What does OPEN stand for

A

Ostwald
Platinum
Exothermic
Nitric Acid

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9
Q

What does OILRIG stand for

A

Oxidation
Is
Loss
Reduction
Is
Gain

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10
Q

How to remember the reaction between Metal and Acid

A

MASH

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11
Q

what does MASH stand for

A

Metal
Acid
Salt
Hydrogen

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12
Q

Vinegar is a solution of

A

ethanoic acid

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13
Q

solution

A

produced when a solute is dissolved in a solvent

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14
Q

solute

A

is dissolved

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15
Q

solvent

A

does the dissolving

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16
Q

In industry, calcium oxide is reacted with sulfur dioxide to reduce the volume of sulfur dioxide released into the atmosphere.

Explain why calcium oxide is able to reduce the volume of sulfur dioxide released

A

calcium oxide is base, so forms an alkaline solution when dissolved in water
It will neutralise the sulfur dioxide

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17
Q

Explain the change in the pH of the solution as sulfur dioxide dissolves

A

pH of solution decreases below 7 because the H+ ion concentration goes up

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18
Q

Half life of Americium-242 = 16 hours
Half-life of Americium-241= 432 years

Why do smoke detectors use americium-241 and not americium-242?

A

Americium 242 has a longer half life so will not be need to be replaced as often

19
Q

The next step involves separating pure titanium(IV) chloride from other liquid impurities that are also produced during the first step.

Suggest a name for this process

A

Distillation

20
Q

TiO2 +2Cl2 +2C –> TiCl4 +2X
Identify X

A

CO

21
Q

The Sodium Chloride can be electrolysed. Suggest how this could make the extraction of titanium from titanium oxide more economical

A

The products can be recycled

22
Q

What is ‘a solution of accurately known concentration’ the definition of?

A

Standard Solution

23
Q

what two elements are liquid at room temperature

A

bromine and mercury

24
Q

H2O(l) ⇋ H+(aq) + OH- (aq)

A

dissociation of water

25
Q

hydration of an alkene turns it into an

A

alcohol

26
Q

hydrogenation of an alkene turns it into an

A

alkane

27
Q

how many covalent bonds does oxygen have

A

2

28
Q

how many covalent bonds does nitrogen have

A

3

29
Q

What is the ion electron equation for a nitrogen ion forming a nitrogen atom?

A

N3- —-> N + 3e

30
Q

What will happen to bromine water if an alkane is added to it?

A

nothing

31
Q

What is broken during an addition reaction?

A

A C=C bond

32
Q

priority of functional groups

A
  1. Carboxyl
  2. Hydroxyl
  3. Carbon to Carbon double bond
  4. Branches
33
Q

covalent network elements

A

carbon (diamond)
carbon (graphite)
silicon
boron

34
Q

covalent network substances

A

silicon dioxide (SiO2)

35
Q

ion

A

a charged particle

36
Q

a fuel

A

burns in oygen to release energy, producing carbon dioxide and water

37
Q

isotopes

A

atoms of the same element (same atomic number) but with different mass numbers

38
Q

a standard solution

A

a solution of accurately known concentration

39
Q

how soluble is ammonia

A

very soluble

40
Q

How many moles are there in 24g of carbon?

A

2 moles

41
Q

equimolar

A

same concentration

42
Q

equations for making a standard solution

A
  1. Number of moles (n=cV)
  2. Work out formula
  3. Work out the GFM of the subbstance
  4. Work out mass of substance needed (m=n*GFM)
43
Q

A solution of known concentration is added to a set volume of the solution of unknown concentration until the reaction is neutralised.

The end point is normally determined by a colour change. The unknown concentration can then be calculated

This is what happens during

A

a titration

Zzz- Nat 5 Chemistry (15 decks)

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