True or false, is the science of molecules and and their chemical bond is called chemistry

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.

In a ball-and-stick molecular model, what do the sticks represent?