1. compounds will have higher boiling points than molecules. A. Nonpolar/polar
B. Polar/nonpolar

2. Ammonia (NH3) has an unbonded pair of electrons on the central nitrogen. This means ammonia is a molecule.

A. Polar
B. Nonpolar

What material does not melt at any temperature

The small bags of silica gel you often see in a new shoe box are placed there to control humidity. despite its name, silica gel is a solid. it is a chemically inert, highly porous, amorphous form of sio2. because water vapor readily adsorbs onto the surface of silica gel, it acts as a desiccant. despite not knowing mechanistic details of the adsorption of water onto silica gel, from the information provided you should be able to make an educated guess about the thermodynamic characteristics of the process. predict the signs for δg, δh, and δs for the adsorption of water.

Arrange the elements in order of increasing electronegativity. use the periodic table to you arrange the elements. p o k mg