C5.7 - Neutralisation And The PH Scale (Finished?)

Question 1

What makes solutions acidic?

Answer 1

H+ ions released into a solution when water is added to an acid

Question 2

What is an Acid?

Answer 2

Substances that produce H+ ions when you add them to water

Question 3

What causes liquids to be alkaline?

Answer 3

Excess OH- ions formed when alkalis are added to water

Question 4

What is the pH scale?

Answer 4

A measure of how acidic or alkaline a solution is

Question 5

Ahat are two ways you can measure the pH of a solution?

Answer 5

• Using an indicator which is a dye that changes colour depending on if its above or below a certain pH
• Using a pH probe attached to a data to measure pH electronically