Which pair of molecules is not a polar bond?
oa. n-o
oo
b. c-o
c. o-h
od. 0-0

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Which process does not require the presence of a physical substance in order to transfer heat? air in the atmosphere is heated by the ground. this warm air then rises, and cooler air falls. this is an example of what type of process? how is conduction different from radiation?

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt