pH Scale Mastery
A Grade 12 science worksheet covering the pH scale, acid-base concepts, and calculations.
Includes
Standards
pH Scale Mastery
Name:
Date:
Score:
Read each question carefully and provide your best answer. Show all work for calculations.
Refer to the pH scale diagram below for questions 1-3.
1. Which of the following substances is considered a strong acid?
Pure Water
Lemon Juice
Bleach
Baking Soda Solution
2. A solution with a pH of 13 would be classified as:
Strong Acid
Weak Acid
Neutral
Strong Base
3. The pH scale ranges from 0 to 14, where values below 7 indicate an solution, values above 7 indicate a solution, and a value of 7 indicates a solution.
4. A substance that releases hydrogen ions (H+) in solution is called an , while a substance that releases hydroxide ions (OH-) or accepts hydrogen ions is called a .
5. Explain the relationship between the hydrogen ion concentration ([H+]) and the pH of a solution.
6. A solution has a hydrogen ion concentration of 1.0 x 10^-4 M. Calculate its pH and determine if it is acidic, basic, or neutral.
7. If the pOH of a solution is 2.5, what is its pH? Is the solution acidic or basic?
8. A strong acid completely dissociates in water.
True
False
9. The concentration of hydroxide ions ([OH-]) is directly proportional to pH.
True
False
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