Acids, bases and salts Details

Question 1

Acid + metal →

Answer 1

Salt + Hydrogen

Question 2

Acid + Base →

Answer 2

Salt + Water

Question 3

Acid + Carbonate →

Answer 3

Salt + Water + Carbon dioxide

Question 4

Colour litmus becomes in acids

Answer 4

red

Question 5

Colour litmus becomes in alkalis

Answer 5

blue

Question 6

Colour thymolphthalein becomes in acids

Answer 6

colourless

Question 7

Colour thymolphthalein becomes in alkalis

Answer 7

blue

Question 8

Colour methyl orange becomes in acids

Answer 8

red

Question 9

Colour methyl orange becomes in alkalis

Answer 9

yellow

Question 10

Bases are…

Answer 10

proton acceptors(oxides or hydroxides of metals)

Question 11

Alkalis are…

Answer 11

soluble bases(proton acceptors)

Question 12

Chemical formula of hydrochloric acid

Answer 12

HCl(aq)

Question 13

Chemical formula of sulfuric acid

Answer 13

H₂SO₄(aq)

Question 14

Chemical formula of nitric acid

Answer 14

HNO₃(aq)

Question 15

Chemical formula of ethanoic acid

Answer 15

CH₃COOH(aq)

Question 16

Chemical formula of ammonia

Answer 16

NH₃

Question 17

Dissociation

Answer 17

the separation of ions that occurs when a solid ionic compound dissolves

Question 18

Saturated solution

Answer 18

a solution that contains the maximum amount of solute that is capable of dissolving(at that temperature)

Question 19

Solutions of acids contain…

Answer 19

hydrogen ions

Question 20

Solutions of alkalis contain…

Answer 20

hydroxide ions

Question 21

The higher the concentration of hydroxide ions(in alkalis)…

Answer 21

the higher the pH

Question 22

The higher the concentration of hydrogen ions(in acids)…

Answer 22

the lower the pH

Question 23

Acids are…

Answer 23

proton donors

Question 24

Neutralisation

Answer 24

a reaction with acid that gives water as well as a salt

Question 25

Amphoteric oxides

Answer 25

oxides that react with both acids and alkalis

Question 26

Neutral oxides

Answer 26

oxides that do not react with acids nor alkalis

Question 27

All carbonates are insoluble except….

Answer 27

sodium, potassium and ammonium carbonates

Question 28

All chlorides are soluble except…

Answer 28

silver and lead chloride

Question 29

All sulfates are soluble except…

Answer 29

calcium, barium and lead sulfate

Question 30

All nitrates are soluble(T/F)

Answer 30

True

Question 31

All sodium, potassium and ammonium salts are soluble(T/F)

Answer 31

True

Question 32

How to precipitate an insoluble salt

Answer 32

Mix a solution that contains its positive ions with one that contains its negative ions

Question 33

Charge of ammonium ions(NH₄)

Answer 33

+

Question 34

Charge of hydroxide ions(OH)

Answer 34

-

Question 35

Charge of nitrate ions(NO₃)

Answer 35

-

Question 36

Charge of carbonate ions(CO₃)

Answer 36

2-

Question 37

Charge of sulfate ions(SO₄)

Answer 37

2-

Question 38

Examples of amphoteric oxides

Answer 38

-Aluminium oxide
-Zinc oxide
-Lead(II) oxide

Question 39

Examples of neutral oxides

Answer 39

-Carbon monoxide
-Nitric oxide(NO)