List the formulas of three soluble bromide salts and three insoluble bromide salts. Do the same exercise for sulfate salts, hydroxide salts, and phosphate salts (list three soluble salts and three insoluble salts). List the formulas for six insoluble Pb2 salts and one soluble Pb2 salt.
October 2, 2017 – Lecture 12 Energy Chemical reactions involve energy changes Kinetic energy – energy of motion o Mechanical energy o Thermal energy o Electrical energy 2 o K.e. = (1/2) mv Potential energy – stored energy o Gravitational energy o Electrostatic energy (energy of charged particles) o Chemical potential energy (energy of attraction or repulsion among electrons and nuclei) Internal Energy Internal energy (E) of a system is sum of all potential and kinetic energy components o Energy = K.E + P.E Internal energy changes when reactants (in a chemical reaction) change to products System & Surrounding Divides the unive
