Acids And Bases

Question 1

Alkali

Answer 1

A base that dissolves in water eg drain cleaner

Question 2

Neutral

Answer 2

Neither an acid nor a base

pH of 7

Question 3

Neutralisation

Answer 3

Acid & base mixed together in the right concentration neutralise each other
Water and salt are produced

Question 4

Indigestion

Answer 4

Excess stomach acid-> take an antacid (base)

Question 5

Bee sting

Answer 5

Acid->rub a base (bread soda) on it to neutralise

Question 6

Wasp sting

Answer 6

Alkaline-> needs to be treated with an acid (vinegar)

Question 7

Acid

Answer 7

Turns blue litmus paper 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

Eg 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

pH levels

Answer 15

7- neutral
Less than 7- acid
More than 7- base

Question 16

Titration

Answer 16

An experiment to neutralise an acid (hydrochloric acid) with a base (sodium hydroxide)
Burette,pipette,conical flask and white tile are used
HCI+NaOH->NaCl+H2O
Products are salt and water
Allows us to find out how much base is needed to neutralise