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3 cards from this section. Quick, good the night before a test.
What color does litmus paper turn in an acidic solution?
Think of how a warning light can indicate danger.
How does phenolphthalein change color in a basic solution?
Consider the happy color of many flowers.
What does litmus paper turn in a basic solution?
Think about the primary color associated with 'base'.
True or False: Phenolphthalein turns pink in acidic solutions.
One color represents acid, the other base.
Explain the pH range in which phenolphthalein is effective, and why it would not work well for very strong acids.
Consider its color change range and the nature of strong acids.
Design a comparative study using litmus paper and phenolphthalein to determine pH levels of three household solutions. Present your findings.
Think of commonly used household items that differ in acidity.
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