Question 1

In terms of $	ext  {pH},$ what is an acid?

Accepted Answer

a solution with a $	ext  {pH}$ of less than 7

Answer

a solution with a $	ext  {pH}$ of more than 8

Answer

a solution with a $	ext  {pH}$ equal to 7

Answer

a solution with a $	ext  {pH}$ of between 0-3

Question 2

In terms of $	ext  {pH},$ what is a neutral solution?

Accepted Answer

a solution with a $	ext  {pH}$ of $7$

Answer

a solution with a $	ext  {pH}$ of less than $7$

Answer

a solution with a $	ext  {pH}$ of more than $8$

Answer

a solution with a $	ext  {pH}$ from $6$ to $8$

Question 3

In terms of $	ext H^+$ ions, what is an acid?

Accepted Answer

a substance that releases $	ext H^+$ ions when dissolved in water

Answer

a substance that releases $	ext{OH}-$ ions when dissolved in water

Answer

a substance which reacts with $	ext H^+$ ions

Answer

a substance which absorbs $	ext H^+$ ions when dissolved in solution

Question 4

How is the amount of $	ext H^+$ ions in a solution related to its $	ext  {pH}?$

Accepted Answer

the more $	ext H^+$ ions, the lower the $	ext {pH}$

Answer

the more $	ext H^+$ ions, the higher the $	ext {pH}$

Answer

the more $	ext H^+$ ions, the closer the $	ext {pH}$ is to neutral, $	ext  {pH 7}$

Answer

the amount of $	ext H^+$ ions does not affect the $	ext {pH}$

Question 5

What is the name of this acid, $	ext  {HCI}?$

Accepted Answer

hydrochloric acid

Answer

chlorine acid

Answer

hydraulic acid

Answer

carboxylic acid

Question 6

What is the name of this acid, $	ext{H}_2	ext{SO}_4?$

Accepted Answer

sulphuric acid

Answer

phosphoric acid

Answer

sulphate acid

Answer

nitric acid

Question 7

What is the name of this acid, $	ext{HNO}_3?$

Accepted Answer

nitric acid

Answer

phosphoric acid

Answer

sulphuric acid

Answer

nitrate acid

Question 8

How do you measure the $	ext  {pH}$ of a substance?

Accepted Answer

universal indicator or $	ext  {pH}$ probe

Answer

by using cobalt chloride paper

Answer

by using a thermometer

Answer

by using filter paper

Question 9

What is a strong acid?

Accepted Answer

an acid where the molecules or ions completely ionise in water

Answer

an acid which reacts quickly

Answer

an acid where the molecules or ions partially ionise in water

Answer

an acid which reacts slowly

Question 10

What is a weak acid?

Accepted Answer

an acid where the molecules or ions partially ionise in water

Answer

an acid which reacts slowly

Answer

an acid which reacts quickly

Answer

an acid where the molecules or ions completely ionise in water

Question 11

What name is given to a compound formed when a metal ion takes the place of a hydrogen ion in an acid?

Accepted Answer

salt

Question 12

Which type of salt does sulfuric acid form?

Accepted Answer

Sulphate

Answer

Chloride

Answer

Sulphur oxide

Answer

Nitrate

Question 13

Which type of salt does hydrochloric acid form?

Accepted Answer

Chloride

Answer

Nitrate

Answer

Sulphate

Answer

Chlorate

Question 14

Which type of salt does nitric acid form?

Accepted Answer

Nitrate

Answer

Nitrogen oxides

Answer

Sulphate

Answer

Chloride

Question 15

What are the products of a reaction between a metal and an acid?

Accepted Answer

salt $+$ hydrogen

Answer

salt $+$ oxygen

Answer

salt $+$ water

Answer

salt $+$ carbon dioxide

Question 16

What are the products of a reaction between a metal hydroxide and an acid?

Accepted Answer

salt $+$ water

Answer

salt $+$ oxygen

Answer

salt $+$ hydrogen

Answer

salt $+$ carbon dioxide $+$ water

Question 17

What are the products of a reaction between a metal oxide and an acid?

Accepted Answer

salt $+$ water

Answer

salt $+$ hydrogen

Answer

salt $+$ carbon dioxide $+$ water

Answer

salt $+$ oxygen

Question 18

What are the products of a reaction between a metal carbonate and an acid?

Accepted Answer

salt $+$ water $+$ carbon dioxide

Answer

salt $+$ water

Answer

salt $+$ oxygen

Answer

salt $+$ hydrogen

Question 19

What is a base?

Accepted Answer

substance that reacts with acids in neutralisation reactions

Answer

substance that reacts with alkalis to form an acid

Answer

substance that has a $	ext  {pH}$ of $7$

Answer

substance that reacts with acids in decomposition reactions

Question 20

What is an alkali?

Accepted Answer

substance that dissolves in water to form a solution above $	ext  {pH 7}$

Answer

insoluble base

Answer

substance that reacts with water to form an acidic solution

Answer

substance that reacts with acids in oxidation reactions

Question 21

What the name of the reaction between an acid and a base to produce a salt & water?

Accepted Answer

neutralisation

Question 22

What is the ionic equation for a reaction between an acid and an alkali?

Accepted Answer

$	ext H^+(	ext {aq})+ 	ext {OH}^-(	ext {aq})ightarrow 	ext H_2	ext O	ext (	ext{l})$

Answer

$	ext H_2	ext O ightarrow 	ext H_2	ext O(	ext l)+ (	ext {aq}) +	ext{OH}^{-}$

Answer

$	ext H^+ (	ext {aq}) + 	ext {OH}^-(	ext {aq}) ightarrow 	ext {HO}$

Answer

$	ext {HO}+(	ext {aq}) ightarrow 	ext H^+(	ext {aq}) + 	ext{OH}^{-}$

Question 23

How can you obtain a solid salt from a solution?

Accepted Answer

crystallisation

Answer

filtration

Answer

fractional distillation

Answer

distillation

Question 24

When an acid reacts with a metal, which species is oxidised?

Accepted Answer

the metal

Answer

the anion in the acid

Answer

hydrogen

Answer

oxygen

Question 25

When an acid reacts with a metal, which species is reduced?

Accepted Answer

hydrogen

Answer

oxygen

Answer

the metal

Answer

the anion in the acid

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