Acids And Alkalis

Question 1

What’s the difference between litmus paper and universal indicator?

Answer 1

Litmus: just tells you if it is acid of alkali. It does not tell you how strong it is.
Universal indicator: tells you the pH number.

Question 2

Acids turn litmus paper…

Answer 2

Red

Question 3

Alkali turn litmus paper

Answer 3

Blue

Question 4

Name a weak acid

Answer 4

Vinegar (ethanol can acid)

Question 5

Name 2 strong acids

Answer 5

Hydrochloric acid in stomach

Sulfuric acid in car battery

Question 6

Name something neutral

Answer 6

Water

Question 7

Name a weak alkali

Answer 7

Washing up liquid

Question 8

Name 2 strong alkali

Answer 8

Ammonia solution (for example Jiff cleaner)
Sodium hydroxide solution

Question 9

What is a neutralisation reaction?

Answer 9

Acid + alkali ▶️ salt + water

The products have a neutral pH

Question 10

Neutralisation

Hydrochloric acid reacts to form

Answer 10

Chloride salts such as sodium chloride

Question 11

Neutralisation

Sulfuric acid reacts to form

Answer 11

Sulfate salts such as copper sulfate

Question 12

Neutralisation

Nitric acid reacts to form

Answer 12

Nitrate salts such as sodium nitrate