BIOL 101- Final Exam Guide - Comprehensive Notes for the exam ( 28 pages long!)
Document Summary
Electron- negative mass- negligible, but still has mass. Ch. 2 & 3: an atom has an atomic number of 7 and an atomic mass of 18. 7 protons and electrons 11 neutrons: draw the proper electron configuration of an atom with 8 protons, define: Covalent bond: a bond sharing electrons between two or more atoms in the orbital. Ionic bond: a bond between two or more atoms in which electrons are transferred to fill valence orbitals; creates anions and cations. Polar covalent bonds are caused by an unequal sharing of electrons, usually due to large differences in electronegativity. An acid is a substance that releases h+ A base is a substance that releases oh- They are made of subatomic particles called neutrons, electrons, and protons. Neutron accounts for mass, electron accounts for reactivity, proton account for nature. Be able to determine the electron configuration of an atom if given the atomic number.
