If we warm a volume of air, it expands. Does it then follow that if we expand a volume of air, it warms? Explain.

nope don't think so

Explanation:

the heat causes the molecules to move faster therefore expanding in watever it the air is in

If the pressure is maintained at a constant value then both statements are equivalent:

P V = n R T    Ideal gas equation

if P, n, and R are maintained at constant values then

V = T and the two expressions are equivalent

come closer and become far apart and become steam/gas

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop