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 7
A solution does not change the color of either red or blue litmus paper. What is the nature of the solution?
A solution turns phenolphthalein pink. Is the solution acidic or basic?
A student adds a few drops of universal indicator to a solution and observes a green color. What does this indicate about the solution?
A student adds methyl orange to a solution and observes a red color. What does this indicate about the solution?
Describe how you would use litmus paper to test if a solution is acidic or basic.
Describe what happens when blue litmus paper is placed in a neutral solution.
Explain why indicators are important in chemistry experiments.
Explain why turmeric is not suitable for testing acids.
Name one natural indicator other than litmus.
What color does blue litmus paper turn in an acidic solution?
What color does red litmus paper turn when dipped in a basic solution?
What color does turmeric turn in a basic solution?
What is an acid-base indicator?
What is the color of phenolphthalein in a neutral solution?
What is the main difference between a universal indicator and litmus?
What is the main use of acid-base indicators in chemistry?
