What kind of odor does acetic acid have?

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.