What was one important discovery that the Curies made?
A material’s radioactivity cannot be changed by altering the material physically.
A material’s radioactivity can be weakened or intensified by changing it chemically.
Radioactive materials generally contain radium or polonium.
Radioactive materials are found only in the form of salts

Newtons second law deals most cosely with

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.

How does climate change cause the ocean's thermohaline current to slow down?