Acids And Bases

Question 1

What is the lower pH of a solution

Answer 1

Acidic

Question 2

What is the higher pH of a solution

Answer 2

Alkaline

Question 3

What is a pH of 7

Answer 3

Neutral

Question 4

How can you measure the pH of a solution

Answer 4

Indicator: dye that changes colour depending on whether it’s above or below a certain pH
pH probe: attached to a pH meter to measures pH electronically. The probe is placed in the solution and there pH is given as a numerical value

Question 5

What is a wide range indicator

Answer 5

Contain a mixture of dyes that means they gradually change colour over a broad range of pH

Question 6

What is the process of neutralisation

Answer 6

When an acid and base react to form
Salt + water
acid + base ——— salt + water

Question 7

What is an acid

Answer 7

A substance that forms aqueous solutions with a pH of less than 7

Question 8

What do acids form in water

Answer 8

H+

Question 9

What is a base

Answer 9

Substance with a pH greater than 7

Question 10

What is an alkali

Answer 10

A base that dissolved in water to form a solution with a pH greater than 7

Question 11

What do alkalis form in water

Answer 11

OH-

Question 12

What is neutralisation between acids and alkalis

Answer 12

H+ + OH- ———- H2O

Question 13

What is the product when an acid neutralises a base

Answer 13

Neutral