Assertion: phenolphthalein | /r/CapableOf | change color
Facets:
value: with respect to ph levels
type: OTHER
value: as an acid base indicator
type: PURPOSE
Source sentences:
text: As an acid base indicator, phenolphthalein changes color depending on the chemical nature of the substance to which it is exposed.
text: Phenolphthalein is an acid-base reacting agent which changes its color with respect to pH levels.