WorksheetsACIDS AND ALKALIS
Total questions: 26
Worksheet time: 20mins
What is the pH of distilled water?
pH 12
pH 3
pH 8
pH 7
What colour does litmus paper turn when added to an alkali?
Blue
Red
Green
Colourless
What colour does litmus paper turn when added to an acid?
Blue
Red
Green
Colourless
What other laboratory substance can you use to test if colourless substance is an acid or an alkali?
Catalyst
Salt
Universal Indicator
Water
A wasp sting is alkali. Which substance would neutralise the sting?
Vinegar
Bleach
Baking soda
Distilled water
If you wanted to test a colourless and odourless substance at home, what household item could you use?
Red cabbage water
Bleach
Water
Vinegar
Which substance is an acid?
Water
Bleach
Orange juice
Washing powder
Which pH levels indicated a strong acid?
1-3
4-6
8-11
12-14
What happens to the pH of an acid during neutralisation?
It stays the same
It moves toward pH 1
It moves towards pH 7
It moves towards pH 14
Which pH level indicates a weak alkali?
1-3
4-6
8-11
12-14
Which pH level indicates a strong alkali?
1-3
4-6
8-11
12-14
Alkalis feel...
Rough
Granulated
Soapy
Smooth
Strong acids and alkalis are...
Sour
Sweet
Corrosive/Caustic
Burn litmus paper
What pH range would you get for an acid?
0-6
7
7-14
2-10
An alkali can neutralize an acid
False
True
Which of the following substances is neutral?
Pepsi
Water
Toothpaste
Which one is more dangerous?
Concentrated acid.
Dilute acid.
An acid turn blue litmus paper red
True
False
An strong acid or alkaline can burn your hand.
True
False
Name the acid found naturally in citrus fruits.
Ethanoic Acid
Sulphuric Acid
Citric Acid
Hydrochloric Acid
What is the taste of acids?
(a)
What is the taste of alkalis?
(a)
Acids can be corrosive and must be handled with care.
True
False
Alkalis are used for making soaps.
True
False
