Name:________________
Life Science
Period:_________
pH Practice
LS-6
Identify acidic, basic, and neutral liquids based on pH
Skill
#5:
Classify each substance below as a strong acid, strong base, weak acid, weak base, or neutral.
Write your answers in the table below.
Substance
Grape jelly
Potassium hydroxide
Dish soap
Distilled water
Rain water
Strong acids (2)
Skill
#6:
Weak acids (3)
pH
3.4
12.0
8.5
7.0
6.5
Substance
Nitric acid
Lead (II) hydroxide
Hydrofluoric acid
Ketchup
Sodium hydroxide
Neutral (1)
Weak bases (2)
pH
1.0
7.5
1.0
3.9
12.0
Strong bases (2)
Understand the concept of neutralization (“Meet in the middle”)
Use the pH scale above to determine if mixing equal amounts of each substance
produces a weak acid, weak base, or neutral:
Nitric acid + lead (II) hydroxide à _________________________
Grape jelly and dish soap à _____________________________
Distilled water and nitric acid à ____________________________
Hydrofluoric acid + sodium hydroxide à _____________________
Ketchup + potassium hydroxide à __________________________