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Science > Acids And Alkali Revision > Flashcards

Acids And Alkali Revision Flashcards

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0
Q

What would corrosive do to you?

A

Attacks and destroys living tissue including eyes and skin

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1
Q

What would irritant do to you?

A

It can make you ill if swallowed, breathed in to absorbed through the skin

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2
Q

Colour of litmus

Hydrochloric acid

A

Pink

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3
Q

Colour of Litmus

Sodium hydroxide

A

Blue

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4
Q

Colour of Litmus

Citric acid

A

Pink

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5
Q

Colour of Litmus

Potassium hydroxide

A

Blue

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6
Q

Colour of Litmus

Phosphoric acid

A

Pink

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7
Q

Colour of Litmus

in water

A

Stays the colour it started ( so red stays red and blue stays blue)

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8
Q

pH of Boric acid

A

Weak acid pH5

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9
Q

pH of sodium hydroxide

A

Strong alkali pH14

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10
Q

pH of sodium bicarbonate

A

Weak alkali pH 9

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11
Q

pH of distilled water

A

Neutral pH7

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12
Q

What is the pH range for acid?

A

PH less than 7

The smaller the number the more acidic

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13
Q

PH range for alkali

A

Over pH7

The higher the number the stronger the alkali

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14
Q

What is the pH of a neutral solution

A

Exactly pH 7

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15
Q

True or false

pH 7 means neutral

A

True

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16
Q

Hazard sign for toxic if swallowed

A

Skull and cross bones

17
Q

Hazard sign for corrosive

A

Hand and something being spilt on it.

18
Q

Hazard sign for irritant

A 
A cross (current)
Exclamation mark (previous hazard symbol)
19
Q

Hazard sign for flammable?

A 
A flame (old)
A line with a flame on top (new)
20
Q

Hazard sign for explosive?

A

Lines blowing up

21
Q

Hazard sign for oxidising?

And meaning

A

Circle with a flame on top (old)
Line with circle with a flame on top (new)
Don’t mix with combustibles may intensify fire.

22
Q

Hazard sign for damages the environment?

A

A dead tree and dead fish

23
Q

What is the pH of water

A

7

27
Q

UI colour for weak acid

A

Orange to orangey yellow as it gets closer to neutral

28
Q

UI for weak alkali

A

Blue-green to turquoise as it gets more acid in it.

29
Q

What formulae is Hydrochloric acid

A

HCl

30
Q

What formulae is sulphuric acid

A

H2SO4

31
Q

What formulae is Nitric acid

A

HNO3

32
Q

What is HCl

A

Hydrochloric acid

33
Q

What is H2SO4

A

Sulphuric acid

34
Q

What is HNO3

A

Nitric acid

35
Q

What formulae is sodium hydroxide

A

NaOH

36
Q

What formulae is potassium hydroxide

A

KOH

37
Q

What formulae is Calcium hydroxide

A

Ca(OH)2

38
Q

What is NaOH

A

Sodium hydroxide

39
Q

What is KOH

A

Potassium hydroxide

40
Q

What is Ca(OH)2

A

Calcium hydroxide

56
Q

UI colour for strong alkali

A

Purple

63
Q

UI colour for neutral

A

Green

64
Q

UI colour for strong acid

A

Red

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