There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unique substances. Explain how this can be true.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

4. propanol and isopropanol are isomers. this means that they have a) the same molecular formula but different chemical properties. b) different molecular formulas but the same chemical properties. c) the same molecular formula and the same chemical properties. d) the same molecular formula but represent different states of the compound

Which description best characterization the motion of particles in a solid