The acid form of an indicator is yellow and its anion is blue. The Ka of this indicator is 10-5. What will be the approximate pH range over which this indicator changes color?

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.