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WorksheetspH Scale Quiz
Total questions: 11
Worksheet time: 25mins
On the pH scale, an acid is a compound that produces a solution with a pH (a) 7.
On the pH scale, a base is a compound that produces a solution with a pH (a) 7.
What pH does a neutral substance have?
5
6
7
8
Which of the following is the weakest acid?
bananas (pH 5)
tomatoes (pH 4)
cheese (pH 6)
orange juice (pH 3)
Tomatoes have a pH of about 4. How many times more acidic are tomatoes versus pure water?
(a)
Eggs have a pH of about 8. How many times more basic are eggs versus orange juice (pH 3)?
(a)
Why does pure, clean rainwater have a pH of 5.6?
What is the cause of acid rain?
Our teeth enamel is made of a basic material called hydroxyapatite. Knowing this, would you predict the pH of human saliva to be acidic? Why?
Approximately what pH value does human saliva actually have?
(a)
If you were creating a toothpaste, would it be most effective if it was acidic or basic? Why?
