Acid-Base Indicators
Chemistry ⇒ Acids, Bases, and Salts
Acid-Base Indicators starts at 7 and continues till grade 12.
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See sample questions for grade 9
A student adds a few drops of phenolphthalein to a solution and observes no color change. What can be inferred about the solution?
A student adds blue litmus paper to a solution and it turns red. What does this indicate about the solution?
A student uses turmeric paper to test a solution and observes no color change. What does this indicate?
Describe how red cabbage juice can be used as an acid-base indicator.
Describe the color change of methyl orange in acidic and basic solutions.
Describe the use of beetroot juice as an acid-base indicator.
Explain why indicators are important in titration experiments.
Explain why phenolphthalein is not suitable for titrating a strong acid with a weak base.
Explain why turmeric is not suitable for detecting acids.
Explain why universal indicator is more useful than litmus paper for determining the pH of a solution.
Name two natural indicators other than litmus.
What color does blue litmus paper turn in a basic solution?
What is an acid-base indicator?
What is the main difference between a natural and a synthetic indicator?
