PREDICT Do you think warming a cannonball in a fire has any effect on the total energy of the cannonball?

I think yes because the heat from the fire will transferred to the cannon ball and it will cause something with its energy to change effect.

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf