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PHS: Edexcel C8 Acids and Alkalis - Review

Total questions: 23

Worksheet time: 46mins

Name
Class
Date
1.
What does this hazard symbol mean?
a)
corrosive
b)
flammable
c)
harmful
d)
irritant
2.

What colour does litmus turn in acidic solutions?

a)

blue

b)

yellow

c)

pink

d)

colourless

e)

red

3.

What colour does methyl orange turn in alkaline solutions?

a)

blue

b)

yellow

c)

pink

d)

colourless

e)

red

4.

What colour is phenolphthalein in acidic solutions?

a)

blue

b)

yellow

c)

pink

d)

colourless

e)

red

5.
What colour is litmus in alkaline solutions?
a)
blue
b)
yellow
c)
pink
d)
colourless
e)
red
6.

What colour is methyl orange in acidic solutions?

a)

blue

b)

yellow

c)

pink

d)

colourless

e)

red

7.

What colour is phenolphthalein in alkaline solutions?

a)

blue

b)

yellow

c)

pink

d)

colourless

e)

red

8.

Acids have a pH of less than which number?

(a)  

9.

What is the formula for hydrochloric acid?

a)

Hcl

b)

HCL

c)

HCl

d)

hcl

10.
What is the formula for sodium hydroxide?
a)
NaOH
b)
NAOH
c)
naoh
d)
Naoh
11.

When dissolved in water, which ions do acids produce an excess of?

a)

H+

b)

H

c)

OH-

d)

H-

12.

When dissolved in water, which ions do alkalis produce an excess of?

a)

H+

b)

H

c)

OH-

d)

H-

13.

How many times more acidic is a solution with a pH of 2 compared to one with a pH of 4?

a)

2 times

b)

10 times

c)

0.5 times

d)

100 times

14.
Mass of substance dissolved / volume of solution = ?
a)
concentration
b)
pH
c)
density
15.
What is the difference between a strong and weak acid?
a)
strong acids dissociate completely, weak acids don't
b)
strong acids are concentrated, weak acids are dilute
c)
strong acids have a higher pH than weak acids
d)
weak acids ionise completely, strong acids don't
16.

What type of substances neutralise acids to form a salt and water only?

(a)  

17.

metal oxide + acid →\rightarrow   ? + ?

a)

salt

b)

water

c)

hydrogen

d)

carbon dioxide

18.

Which of these are most likely to be involved when preparing a soluble salt?

a)

mix

b)

warm

c)

filter

d)

evaporate

e)

distil

19.

Which acid would be reacted with magnesium oxide to produce magnesium nitrate?

(a)  

20.

Which of these is not an alkali, as it is not soluble in water?

a)

sodium hydroxide

b)

potassium hydroxide

c)

copper hydroxide

d)

calcium hydroxide

21.
Which two ions react to produce water in a neutralisation reaction?
a)
H+
b)
OH-
c)
H
d)
H-
e)
OH+
22.
What do we call the very accurate process used to find the quantity of acid needed to neautralise a given volume of alkali?
a)
titration
b)
filtration
c)
distillation
d)
pipetting
e)
burette
23.
What do we call the very accurate piece of apparatus shown in this picture?
a)
burette
b)
pipette
c)
measuring cylinder
d)
conical flask

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