BIOL 1201 Chapter : BIOL 1201 Week 1
Document Summary
Review sessions with coarse assistant (sonu) on mondays @ 5:30. ~assume that the future is like the past. ~atom: the smallest unit of matter separable by normal chemical means. ~subatomic particles: proton (1 charge), neutron (0 charge), electron (-1 charge) ~atomic number = the number of protons in an atom. ~atomic mass = the number of protons and neutrons in an atom (approximately) ~isotopes = are variants of an atom, having a different atomic mass (because of a different number of neutrons) ~bohr model: protons and neutrons in the center with electrons around the center. ~valence: the number of electrons needed to be gained or lost to fill the outer shell of electrons. ~valence electrons: the electrons in the outmost shell. 2 electrons in the first ring (k), 8 in the second(l), 8 in the third(m) Poor representation of where the electrons really are at any given time.
