Acids, Alkalis And Salts

Question 0

Definition of an acid

Answer 0

A proton donor

Question 1

Example of an acid and its taste

Answer 1

Sour taste eg vinegar or Lemon

Question 2

What is a base?

Answer 2

A substance that neutralises an acid to produce salt and water. It is a proton acceptor

Question 3

What is an alkali?

Answer 3

A soluble base, it is a substance that dissolves in water to produce OH- ions

Question 4

What colour is a strong acid and an example?

Answer 4

Red -HCl

Question 5

Colour and example of a weak acid?

Answer 5

Orange/ yellow- vinegar

Question 6

Colour of neutral substance?

Answer 6

Green

Question 7

What is the colour and example of a weak alkali?

Answer 7

Shades of blue- baking soda

Question 8

Colour and example of strong alkali?

Answer 8

Violet/ purple- wash soda

Question 9

What colour is litmus in acid, neutral and alkali?

Answer 9

Acid- red
Neutral- purple
Alkali- blue

Question 10

What colour is phenolphthalein in acid, neutral and alkali?

Answer 10

Acid- colourless
Neutral- colourless
Alkali- pink

Question 11

Colour of methyl orange in acid, neutral and alkali?

Answer 11

Acid- red/ pink
Neutral- orange
Alkali- yellow

Question 12

Acid + metal=?

Answer 12

Salt + hydrogen

Question 13

Acid + Metal oxide=?

Answer 13

Salt + water

Question 14

Acid + metal hydroxide=?

Answer 14

Salt + water

Question 15

Acid + carbonate=?

Answer 15

Salt+ water + carbon dioxide

Question 16

What is a salt?

Answer 16

The compound formed when the hydrogen ion of an acid is replaced by a metal ion or ammonium ion