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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What color does blue litmus turn when acid is added?
💡 Hint: Think about acid properties.
Question 2
Easy
What is the pH of a neutral solution?
💡 Hint: Remember the pH scale.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the pH of vinegar?
- 8
- 2
- 7
💡 Hint: Remember the acidic range on the pH scale.
Question 2
True or False: Bases turn red litmus paper blue.
- True
- False
💡 Hint: Think about the properties of bases.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If 50 mL of hydrochloric acid is neutralized by 25 mL of sodium hydroxide, what volumes of the solutions would be needed if the hydrochloric acid concentration doubles?
💡 Hint: Consider the relation in volumes with changes in concentration.
Question 2
Explain how the properties of pH can affect biological processes in the ecosystem.
💡 Hint: Think about how organisms rely on stable environments.
Challenge and get performance evaluation