PLEASE HELP, VERY EASY! Which two types of matter are pure substances? A. homogenous mixtures and elements
B. solutions and compounds
C. elements and compounds
D. mixtures and elements

There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out

Correct relationship between molecular formula and empirical formula

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology