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Chemistry > Topic 8 Acids, Bases, and Salts > Flashcards

Topic 8 Acids, Bases, and Salts Flashcards

1
Q

What do acids contain

A

hydrogen ion (H+)

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2
Q

What do bases contain (2)

A

metal oxides (O2-)

metal hydroxides (OH-)

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3
Q

What is an alkali

A

A soluble base

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4
Q

What are indicators used for

A

Determine if a substance is acidic or basic

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5
Q

Result of indicators for litmus

A

Litmus
- Colour with acid: red
- Colour with base: blue

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6
Q

What is the pH scale

A

measure of the concetration of hydrogen ions present

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7
Q

Which values of pH tells you what?

A

pH < 7 = acidic
pH 7 = Neutural
pH > 7 = Alkaline/basic

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8
Q

Why are pH meters a more accurate way of determining the pH of a solution?

A

pH meters are able to give accurate readings to 0.01 of a pH unit

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9
Q

What does a reaction of acid with metal produce

A

Acid + metal —-> Salt + hydrogen

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10
Q

What does a reaction of acid with metal oxide produce

A

Acid + metal oxide —> salt + water

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11
Q

What does a reaction of acid with metal hydroxide produce

A

Acid + metal hydroxide —> salt + water

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12
Q

What does a reaction of acid with metal carbonate produce

A

Acid + metal carbonate —> salt + water + carbon dioxide

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13
Q

How is acidic soil neautralised

A

Adding quicklime to water produces slaked lime, which is an alkali and so neautralised the acidic soil

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14
Q

Which type of oxide is basic

A

Metal oxide

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15
Q

What is the pH of a solution involving metal oxides

A

Alkaline (more than 7)

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16
Q

Which type of oxide is acidic

A

non- metal oxide

17
Q

What is the pH of a solution involving non - metal oxides

A

Acidic (less than 7)

18
Q

What are neutural oxides

A

Oxides that show neither basic or acidic properties

19
Q

What are amphoteric oxides

A

Oxides that are able to act as an acid or base

(produces salt and water)

20
Q

Know how to carry out titration calculation using mole method

A

OK

21
Q

Know all the Testing for cations, testing for anions and testing for gases

A
22
Q

Define neutralisation

A

When an acid reacts with a base, forming salt and water

23
Q

Know all the solubility of salt rules

A

Alright

24
Q

If the salt you want to produce is soluble, which reactions can you use?

A

an acid + metal

an acid + metal oxide

an acid + metal carbonate

an acid + metal hydroxide

25
Q

Result of indicator with methyl orange

A

Methyl Orange
- Colour with acid: red
- Colour with base: yellow

26
Q

Result of indicator with universal indicator paper

A

Universal Indicator Paper
- Colour with acid: Strong - red, Weak: orange/yellow
- Colour with base: Strong - purple, Weak : blue

27
Q

Result of indicator with Phenolphthalein

A

Phenolphthalein
- Colour with acid: colourless
- Colour with base: pink

28
Q

Explain burettes

A

Instrument which measures varying volumes of solutions very accurately

29
Q
A

Chemistry (11 decks)

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