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Lesson: The pH Scale

In this lesson, we will learn how to define pH as a logarithmic measure of acid concentration and identify the pH values of common acids and bases.

Worksheet • 10 Questions

Q1:

Ocean water has a pH of 8. Is it acidic, basic, or neutral?

  • AAcidic
  • BBasic
  • CNeutral

Q2:

In which range of values would the pH of a basic solution be found?

  • A>7
  • B>5
  • C<7
  • D<10
  • E>10

Q3:

Orange juice has a pOH of 9.8. Is it acidic, basic, or neutral?

  • ABasic
  • BAcidic
  • CNeutral

Q4:

Is a solution of pH 6.9 acidic, basic, or neutral?

  • ABasic
  • BAcidic
  • CNeutral

Q5:

Milk of magnesia has a pOH of 3.5. Is it acidic, basic, or neutral?

  • AAcidic
  • BBasic
  • CNeutral

Q6:

In which range of values would the pH of an acidic solution be found?

  • A<7
  • B<10
  • C>7
  • D>5
  • E<5

Q7:

Coffee has a pH of 5. Is it acidic, basic, or neutral?

  • ABasic
  • BAcidic
  • CNeutral

Q8:

Is a solution of pH 3.2 acidic, basic, or neutral?

  • ABasic
  • BAcidic
  • CNeutral

Q9:

What is the pH of a neutral solution at room temperature?

Q10:

Calcium carbonate will produce a fizz of carbon dioxide when added to lemon juice. Based on this observation, what can be said about the pH of lemon juice?

  • A <7
  • B <10
  • C >7
  • D >5
  • E <5
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