Acids And Bases

Question 1

Alkali

Answer 1

A base that dissolves in water is called an alkali

Question 2

Neutral

Answer 2

If something is neither an acid nor a base and has a pH of 7

Question 3

Neutralisation

Answer 3

If an acid and base are mixed together in the right concentrations, then they neutralise each other. A salt and water are produced

Question 4

Indigestion

Answer 4

Excess stomach acid, take an antacid (anti-acid) which is a base

Question 5

A bee sting is acidic

Answer 5

Rubbing a base e.g. Bread soda will neutralise it

Question 6

A wasp sting is alkaline

Answer 6

This needs to be treated with an acid e.g. vinegar

Question 7

Acid

Answer 7

Turns blue litmus paper to red

Question 8

Strong acid

Answer 8

Hydrochloric acid, sulphuric acid

Question 9

Weak acid

Answer 9

Vinegar, lemon juice, acid rain

Question 10

Base

Answer 10

Turns red litmus paper blue

Question 11

Alkali

Answer 11

Bases that are soluble in water e.g. drain cleaner

Question 12

Strong base

Answer 12

Sodium hydroxide, calcium hydroxide

Question 13

Weak base

Answer 13

Toothpaste, soap, window cleaner

Question 14

Indicator

Answer 14

Changes colour to show if something is an acid or a base

Question 15

pH7

Answer 15

Neutral

Question 16

pH less than 7

Answer 16

Acid

Question 17

pH greater than 7

Answer 17

Base

Question 18

Titration

Answer 18

An experiment to neutralise an acid with a base.

Question 19

The products of the titration

Answer 19

Are a salt and water