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Chemistry > Chemistry Paper 2 > Flashcards

Chemistry Paper 2 Flashcards

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1
Q

What are two features of alkali metals?

A

Soft and relatively low melting points

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2
Q

Reaction of Lithium with water

A

Floats, fizzles steadily

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3
Q

Reaction of sodium with water

A

Melts to form a ball, fizzles rapidly

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4
Q

Reaction of potassium with water

A

Melts, floats and lilac flame

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5
Q

What happens to reactivity as you go down group 1

A

Increases

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6
Q

What happens when alkali metals react with water

A

Hydrogen gas produced and metal hydroxide produced.

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7
Q

What colour is Lithium Flame test

A

Red

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8
Q

What colour is sodium flame test

A

Yellow

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9
Q

What colour is potassium flame test

A

Lilac

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10
Q

What colour is Calcium flame test

A

Orange/Red

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11
Q

What colour is copper flame test

A

Blue green

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12
Q

Test for Carbonate Ions

A

Add Dilute acid and bubble through limewater - white precipitate

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13
Q

Test for sulphate ion

A

Dilute hydrochloride acid
Barium chloride
White precipitate

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14
Q

How to test for Halide ions

A

Add nitric acid
Add silver nitrate
Forms silver halide precipitate

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15
Q

What colour precipitate is chlorine

A

White

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16
Q

What colour precipitate is bromide

A

Cream

17
Q

What colour precipitate is iodide

A

Yellow

18
Q

How to test for anions using precipitates

A

Add sodium hydroxide

19
Q

What precipitate colour is Aluminium

A

White, turns colourless

20
Q

What precipitate colour is Calcium

A

White -no change

21
Q

What precipitate colour is copper

A

Blue

22
Q

What precipitate colour is iron 2

A

Green

23
Q

What precipitate colour is iron 3

A

Brown

24
Q

Test for ammonium ions

A

Gas produced by the reaction turns damp litmus paper blue

25
Q

What is chlorine at room temp

A

Pale green gas

26
Q

What is bromine at room temp

A

Red brown liquid

27
Q

What is iodine at room temp

A

Grey solid

28
Q

Uses of gases

A

Domestic heating and cooking

29
Q

Uses of petrol

A

Used as fuel for cars

30
Q

Uses of kerosene

A

Used as fuel for aircraft

31
Q

Uses of diesel oil

A

Used as fuel for cars and trains

32
Q

Uses of fuel oil

A

Used as fuel for large ships and in some power stations

33
Q

Uses of bitumen

A

Used to surface roads and roofs

Chemistry (1 decks)

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