One of these property types is not like the others. Tap on the one that doesn't belong.

Phosphorus will
spontaneously
ignite in air to
form P4010

Phosphorus react
with alkaline
solutions to
produce
phosphine (PH3).

Phosphorus
reacts with
chlorine gas
to produce
PC13.

White
phosporus has
a melting point
of 590 °F

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.