Question

Why would you use a solution, such as a cabbage pH indicator, to measure the pH of household items?

to see if food went bad

to test the safety of water

to make sure conditions are safe

to use up old cabbage

Answer 1

Best answer: to make sure conditions are safe.

Reason: a cabbage pH indicator tells you whether something is acidic, neutral, or basic, which is useful for checking conditions (e.g., pool or aquarium water, cleaning solutions, soil pH, or whether a product is dangerously caustic). It is not a reliable way to tell if food is spoiled (some spoilage changes pH but many do not) and it does not test for microbial or chemical contamination in water, so it won’t confirm water safety. "Use up old cabbage" is not a valid scientific reason.