Simplify
x + 50 × 10 = 150​

Compare and contrast physical changes with chemical changes.

Summarize possible ways in which phases of matter could combine to form a solution.

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.