Which describes a physical property? (Select all that apply) A. It can be observed.

B. It can be permanently transformed.

C. It can be measured.

D. It can occur without creating a different substance.

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Why do cells appear different in distilled water than they do in 10% salt water?