Unit 7

Question 1

Acids have a PH of

Answer 1

<7

Question 2

Bases have a pH of

Answer 2

> 7

Question 3

When acids are added to water they form

Answer 3

Hydrogen ions, H+

Question 4

Bases form

Answer 4

Hydroxide ions OH-

Question 5

Equation for when acids react with metals

Answer 5

Metal + acid -> salt + hydrogen
Mash

Question 6

Neutralisation reaction

Answer 6

Base + acid -> water + salt

baws

Question 7

Carbonate + acid ->

Answer 7

Carbon dioxide + salt + water

Cawcs

Question 8

Litmus paper

Answer 8

Acid red
Alkali blue

Question 9

Thymolphthalein

Answer 9

Acid colourless
Alkali blue

Question 10

Methyl orange

Answer 10

Acid red
Alkali yellow

Question 11

Ammounium salts will

Answer 11

Decompose when warmed with an alkali
A salt is formed

Question 12

A neat realisation reaction occurs when an

Answer 12

Acid reacts with an alkali

Question 13

Hydrochloride acid ->
Sulfuric acid ->
Nitric acid ->

Answer 13

Chloride
Sulfate
Nitrate

Question 14

Synthetic indicators are used to show the

Answer 14

Endpoint of titrations as they have a very sharp change of colour when an acid has been neutralised by alkali vice versa

Question 15

A base which is water soluble is referred as

Answer 15

An alkali