1. When assembling joints and connections on standard tapered glassware, thin layers are applied of ______________________ to lubricate the fit and decrease friction between the walls of the

joint glass male/female type.

2. In the organic chemistry laboratory it is of great importance to identify the solubility of the

chemicals to be used in purification or separation experiments. For

To preliminarily identify the solubility, as a general rule the phrase "SAME DISSOLVES AS" is used.

SAME". Name and explain the two specific solubility rules for polar compounds and

not polar.