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Chemistry > Acids And Alkalines > Flashcards

Acids And Alkalines Flashcards

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1
Q

What is an acid?

A

A substance that dissolves in water to give a solution with less than a pH of 7

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2
Q

What is concentrated?

A

In a concentrated solution of an acid there is lots of the acid dissolved in a measured amount of water

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3
Q

What is dilute

A

Small amount of acid dissolved in a measured amount of water

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4
Q

Hydrochloric acid uses

A

Human stomach -digestion

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5
Q

Sulphuric acid use

A

Car batteries

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6
Q

Nitric acid uses

A

Fertilisers

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7
Q

Ethanoic acid

A

Substance in vinegar

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8
Q

Citric acid use

A

Oranges, lemons, citrus fruits

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9
Q

Carbonic acid use

A

Fizzy drinks

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10
Q

Indicator

A

Substance which is one colour in acidic solutions and another in alkaline
This can also be made of natural resources like red cabbage

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11
Q

Alkalai

A

Substance thT dissolve in water to give a solution with pH more than 7

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12
Q

Acid or alkaline?

Less than pH 7

A

Acid

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13
Q

Colour of litmus in acid and alkaline

A

Red and indigo blue

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14
Q

Phenolphthalein colours in both acid and alkaline

A

Colourless and in alkaline it goes magenta

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15
Q

Methyl orange in acid and alkaline

A

Orange / red and then yellow

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16
Q

Bromothymol blue colours

A

Orange / yellow in acid then in alkaline it’s blue

17
Q

What is a pH scale

A

Number scale determining how acidic or alkaline a substance is 1-14

18
Q

A pH less than 7 is?

A

Acidic

19
Q

Over 7 pH is…?

A

Alkaline

20
Q

7 pH

A

Neutral

21
Q

Universal indicator

A

Mixture of indicators that shows how strongly acidic or alkaline a solution is

22
Q

What is a base

A

An insoluble metal oxide or hydroxide

23
Q

A base weakens an acid. True or false

A

False. It neutralises it

24
Q

An alkaline is a soluble base

True or false

A

True

25
Q

What is a reaction between an acid and a base called?

A

Neutralisation

26
Q

What is an example of neutralisation?

A

Salt

27
Q

What liquid do acids need to work easily?

A

Water

28
Q

What do U use to neutralise bee stings

A

A base or alkaline

29
Q

What do U use to neutralise wasp stings

A

Acidic

30
Q

What do U use to neutralise nettle stings

A

Dock leaves or a base

31
Q

Facts about soil

A

If soil is too alkaline or acidic the crops won’t grow properly

32
Q

What pH is soil best used at?

A

6

Chemistry (6 decks)

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