Acids and Bases

Question 1

Acids have a pH of ____

Answer 1

Less than 7

Question 2

A base has a pH of ___

Answer 2

Over 7

Question 3

A pH of 7 is _____

Answer 3

Neutral

Question 4

Acid (eg)

Answer 4

Hydrochloric acid

Question 5

Base (eg)

Answer 5

Sodium hydroxide

Question 6

To learn how much acid is needed to neutralise a base ____

Answer 6

Carry out titration

Question 7

Indicator

Answer 7

A substance that changes colour to identify if the substance is an acid or a base
E.g. Litmus paper

Question 8

Blue litmus paper will turn red in a(n)____

Answer 8

Acid

Question 9

Red litmus paper will turn blue in a(n) ____

Answer 9

Base

Question 10

Alkali

Answer 10

a base that dissolves in water

Question 11

Corrosive

Answer 11

A substance that can cause a material to corrode or dissolve

Question 12

Irritants

Answer 12

Substances that can cause slight inflammation/other discomfort to the body

Question 13

pH scale

Answer 13

Compares the strength of different acids + bases

Question 14

Universal indicator

Answer 14

Can be used with a pH scale to help identify the pH level of a substance

Question 15

Neutralisation

Answer 15

the reaction of an acid + a base to form a salt