Acids and Bases

Question 0

Bases

Answer 0

Indigestion tablets, toothpaste, soap, bread soda, window cleaner, soap, shampoo

Question 1

Acids in the lab

Answer 1

Hydrochloric acid: also found in the stomach

Sulphuric acid: also found in batteries

Question 2

Acid

Answer 2

Lemons, vinegar, vit c, grapes, rhubarb, fizzy drinks, tea, åppłėś

Question 3

pH

Answer 3

We can tell how acidic or basic a substance is by measuring something called pH
7 is neutral

Question 4

Alkali

Answer 4

A base that dissolves in water is called an alkali eg. drain cleaner (sodium hydroxide)

Question 5

Neutral

Answer 5

If something is neither an acid nor a base and has a pH of 7, then it is neutral

Question 6

Neutralisation

Answer 6

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

Question 7

Indigestion

Answer 7

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

Question 8

A bee sting

Answer 8

Is acidic;rubbing a base eg. Bread soda will neutralise it

Question 9

Wasp sting

Answer 9

Is alkaline; this needs to be treated with an acid eg. Vinegar

Question 16

Titration

Answer 16

An experiment to neutralise an acid (hydrochloric acid) with a base (sodium hydroxide) is called a titration

Question 17

The products of the titration

Answer 17

Are a salt and water

Question 18

Indicator paper

Answer 18

An indicator changes colour to tell us if something is an acid or base

Question 19

Acids turn blue litmus paper

Answer 19

Red

Question 20

Bases turn red litmus paper

Answer 20

Blue

Question 21

Universal indicator paper

Answer 21

This changes different colours for different pH values, it compares to the key on the pack

Question 22

Datalogging

Answer 22

This is where you use a pH sensor connected to a computer to measure

Question 23

Test for hydrogen

Answer 23

Lit split will “pop”

Question 24

Test for carbon dioxide

Answer 24

Limewater will turn milky