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Chemistry > Acids, Alkalines And Bases > Flashcards

Acids, Alkalines And Bases Flashcards

1
Q

What colour does litmus go when acid and alkali react with it

A

Pink (acid)

Blue(alkaline)

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2
Q

What colour does phenolphthalein go when acid and alkali react with it

A

Acid colourless

Alkali fuscha pink

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3
Q

What colour does methyl orange go when acid and alkali react with it

A

Acid red

Alkaline yellow

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4
Q

What is the chemical formula of hydrochloride acid

A

HCl

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5
Q

What is the chemical formula for sulfuric acid

A

H2SO4

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6
Q

What is the chemical formula for nitric acid

A

HNO3(charge of -1)

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7
Q

What is the definition of an indicator

A

An indicator is a substance that is one colour when in acid and goes a different colour when dropped in alkaline

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8
Q

What is the definition of pH

A

PH is a number scale that shows how acidic or alkaline a solution is

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9
Q

What is the scale of acid

A

123456

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10
Q

What is the number for neutral

A

7

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11
Q

What is the scale of numbers for alkaline

A

8,9,10,11,12,13,14

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12
Q

What colour does a solution go in a universal indicator with a pH 0,1,2

A

Red

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13
Q

What colour does a solution go in a universal indicator with a pH 3,4,5

A

Orange

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14
Q

What colour does a solution go in a universal indicator with a pH 5,6

A

Yellow

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15
Q

What colour does a solution go in a universal indicator with a pH 7

A

Green

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16
Q

What colour does a solution go in a universal indicator with a pH 8,9

A

Blue/green

17
Q

What colour does a solution go in a universal indicator with a pH 10,11

A

Blue

18
Q

What colour does a solution go in a universal indicator with a pH 12,13,14

A

Purple

19
Q

What is the definition of a base

A

A base is any metal oxide/hydroxide

20
Q

Are metal bases soluble in water

A

No

21
Q

What are the exceptions called with the metal oxides that are soluble in water

A

Alkalis

22
Q

What is the definition of a salt

A

A salt is the compound formed when the hydrogen ions get replace by metal ions or ammonium ions

23
Q

Where in the reactivity series do metals stop reacting with acid

A

Metal below hydrogen

24
Q

What is the general word equation for acid +metal

A

Acid + metal goes to salt + hydrogen

25
Q

How many nitrates are soluble

A

All of them

26
Q

What are the exceptions of all the chlorides being soluble

A

Silver chloride and lead(ii)chloride

27
Q

What are the exceptions of the sulfates being soluble in water

A

Barium sulfate
Lead(ii)sulfate
Calcium sulfate

28
Q

How many metals are insoluble when used to make salts

A

All of them

29
Q

How many bases are insoluble when used to make salts

A

All except for group 1 and 2 (ca downwards) and ammonia

30
Q

How many carbonates are insoluble when used to make salts

A

All except group 1 and ammonia

Chemistry (6 decks)

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