MTTC integrated Sciences 094 Supreme Expertise.

John Dalton developed modern atomic theory negative ion anion, gains electrons positive ion cation; loses electrons ionic bond Formed when one or more electrons are transferred from one atom to another Ionization neutral molecules gain or lose electrons valence electrons Electrons on the outermost energy level of an atom covalent bond A chemical bond that involves sharing a pair of electrons between atoms in a molecule hydrogen bond weak attraction between a hydrogen atom and another atom Van der Waals interactions Weak attractions between molecules or parts of molecules that result from transient local partial charges. 2 most abundant elements in the universe hydrogen and helium isotope An atom with the same number of protons and a different number of neutrons from other atoms of the same element. combustion reaction the oxidation reaction of an organic compound, in which heat is released; exothermic power the rate at which work is done work