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Chemistry > Acids, Bases And Salts > Flashcards

Acids, Bases And Salts Flashcards

1
Q

Name four indicators:

A

Phenolphthalein
Methyl orange
Red litmus
Blue litmus
Universal

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2
Q

What colour is phenolphthalein indicator in alkaline solution?

A

Pink

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3
Q

What does a colour green mean on a universal indicator?

A

The solution is neutral

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4
Q

Why is carbonate a weak acid?

A

It partially ionises in water

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5
Q

Why is sodium hydroxide a strong alkali?

A

It completely ionises in water

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6
Q

What is an alkali?

A

An soluble base

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7
Q

State the neutralisation reaction:

A

Acid + alkali = water

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8
Q

What type of reaction is neutralisation?

A

Exothermic

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9
Q

Metal + acid =

A

Salt + hydrogen

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10
Q

What is a base?

A

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

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11
Q

Metal carbonate + acid =

A

Salt + water + carbon dioxide

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12
Q

Metal hydrogencarbonate + acid =

A

Salt + water + carbon dioxide

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13
Q

Ammonia + acid =

A

Ammonium salt

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14
Q

How can you test for hydrogen gas?

A

Using a lot splint

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15
Q

Due to the experiment how do you know if hydrogen is present?

A

There will be a popping sound

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16
Q

What is a salt?

A

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

17
Q

Name three acids which form salts:

A

Hydrochloride acid
Sulphuric acid
Nitric acid
Ethanoic acid

18
Q

What colour are iron salts and what colour of solution do they form?

A

Green salt
Green solution

19
Q

What happens to zinc when it dissolves in water?

A

It forms a colourless solution

Chemistry (9 decks)

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