Topic 5 - 5.1 - pH scale

Question 1

• Are alkaline pH levels always above or below 7?
• Are acid pH levels always above or below 7?

Answer 1

• Above 7
• Below 7

Question 2

• What is pH?
• What is the pH scale used for?

Answer 2

• pH is a measure of the concentration of hydrogen ions in a substance
• pH scale is used to measure how acidic or alkaline a substance is
• stretches from below 0 to above 14.