- Physical Sciences
used to describe a substance with basic properties.
a halogen atom (F, Cl, Br or I) reacts by addition reaction with alkenes
the part of the Earth and its atmosphere in which life can exist.
the sum of the number of protons and neutrons (the nucleons) in the nucleus of an atom. It...
the process in which a solid, liquid or gas dissolves in a solute to form a solution