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Chemistry > Acids Salts And Bases > Flashcards

Acids Salts And Bases Flashcards

1
Q

Colour of Phenolphthalein in acid

A

Colourless

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2
Q

Colour of phenolphthalein in neutral

A

Colourless

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3
Q

Colourless of phenolphthalein in alkaline

A

Pink

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4
Q

Colour of methyl orange in acid

A

Red

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5
Q

Colour of methyl orange in neutral

A

Orange

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6
Q

Colour of methyl orange in alkali

A

Yellow

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7
Q

Colour of red litmus in acid

A

Red

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8
Q

Colour of red litmus in neutral

A

Red

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9
Q

Colour of red litmus in alkali

A

Blue

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10
Q

Colour of blue litmus in acid

A

Red

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11
Q

Colour of blue litmus in neutral

A

Blue

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12
Q

Colour of blue litmus in alkali

A

Blue

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13
Q

What is an indicator

A

An indicator is a chemical that gives a colour change in acid, neutral or alkaline solutions

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14
Q

Hydrochloric acid

A

HCL, pH 0-2

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15
Q

Sulphuric acid

A

H2SO4, pH 0-2

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16
Q

Nitric acid

A

HNO 3

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17
Q

All acids contain…

A

Hydrogen atoms

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18
Q

Strong acid ___________ _____________ in water

A

Strong acid completely ionises in water

19
Q

Weak acid _____________ ______________ in water

A

Weak acid partially ionises in water

20
Q

Some or all of these hydrogen atoms are ….

21
Q

The acidic hydrogen atoms ionises in water to become …

A

Hydrogen ions

22
Q

Equation for Hydrochloric acid ionising in water

A

HCL —> H+ + Cl -

23
Q

What is a salt?

A

A compound formed when some or all of the hydrogen ions in an acid are replaced with metal or ammonia ions

24
Q

What ion is present in alkalis

A

Hydroxide ion

25
Q

What ion is present in acids

26
Q

Name a strong acid

A

Hydrochloric acid
Nitric acid
Sulphuric acid

27
Q

Name a weak acid

A

Citric acid

28
Q

Name a weak alkali

29
Q

Name a strong alkali

A

Sodium hydroxide
Potassium hydroxide

30
Q

What is a base

A

A substance that reacts with an acid to produce salt and water

31
Q

What is an alkali

A

A soluble base

32
Q

What do acids produce when they react

33
Q

Metal + acid

A

Salt + hydrogen (MASH)

34
Q

Metal oxide + acid

A

Salt + water (the oxide and the hydrogen react to give H20 or water)

35
Q

Metal + hydroxide

A

Salt + water

36
Q

Metal carbonate + water

A

Salt + carbon dioxide + water

37
Q

Metal hydrogencarbonate + acid

A

Salt + carbon dioxide + water

38
Q

Test for hydrogen

A

Will make a squeaky pop with a lighted splint

39
Q

Test for carbon dioxide

A

Will turn limewater milky when bubbled through

40
Q

Ammonia + acid

A

Ammonia salt

41
Q

Observations during acid reactions

A

Solid will disappear (if acid is in excess)
Heat is released
Metals, metal carbonates and metal hydrogencarbonates will all produce gas a.k.a bubbles

42
Q

Copper carbonate

A

Green solid

43
Q

Copper oxide

A

Black solid

44
Q

Copper sulphate

A

Blue solid

Chemistry (4 decks)

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