Acids And Bases

Question 0

Acid+metal

Answer 0

Salt+hydrogen

Test for hydrogen gas: insert lighted splint into test tube, light splint is extinguished with a pop sound

Question 1

Physical properties of acids

Answer 1

• turn blue litmus red

- acids conduct election because they have H+ ions in their solutions

Question 2

Acid+base

Answer 2

Salt+water

This process is called neutralisation

Question 3

Acid+carbonate

Answer 3

Salt+carbon dioxide+water

Test for carbon dioxide: bubble gas into lime water and a white precipitate is formed

Question 4

Use of Sulfuric acid

Answer 4

Manufacture of agricultural fertilisers

Manufacture if detergent,paints,artificial fibres,dyes and plastics

Use in car batteries

Remove rust from iron and steel( as well as hcl)

Question 5

Use of ethanoic acid and citric acid

Answer 5

Preserve food

Question 6

Relationship of base and alkalis

Answer 6

All alkalis are soluble bases, but not all bases are alkalis

Question 7

Oxides and hydroxides, base or alkali

Answer 7

Oxides are bases, hydroxides are alkalis

Question 8

Physical properties of alkalis

Answer 8

Bitter taste
Soupy feeling.
Turn red litmus blue

Question 9

Alkali with ammonium salt

Answer 9

Salt+ammonia+water

Test for ammonia: turn red litmus blue

Question 10

Alkali+metal salt

Answer 10

Alkali reacts with so,unions of metal salts to form precipitates of metal hydroxides

Question 11

Uses of calcium hydroxide and calcium oxide

Answer 11

Added to soil to neutralise acids

Question 12

Use of magnesium hydroxide or aluminium hydroxide

Answer 12

Found in medicine such as antacid is used to relieve indigestion caused by acids

Question 13

Use of magnesium hydroxide in toothpaste

Answer 13

Neutralise acids produced by bacteria on teeth

Question 14

Use of sodium hydroxide or aqueous ammonia

Answer 14

Used in soaps and detergents

Question 15

What are Metallic oxides

Answer 15

Basic oxides and amphoteric oxides

Question 16

What are Non metallic oxides

Answer 16

Acidic oxides and neutral oxides

Question 17

What are Acidic oxides

Answer 17

Oxides of non metals and reacts with water to form acid.

Reacts with bases and alkalis to form salt and water

Question 18

What are Neutral oxides

Answer 18

Oxides of non metals and do not react with both acids and alkalis

Question 19

What are Basic oxides

Answer 19

Oxides of metals and reacts with acids to form salt and water

Question 20

What are Amphoteric oxides

Answer 20

Oxides of metals that reacts with acids or alkalis to form salt and water

Question 21

Strength of acids/alkalis is due to:

Answer 21

Whether they ionise partially or fully, not the Concentration