A ball rolling across the ground in Death Valley will slow and eventually stop. Why?

- the ball’s kinetic energy evaporates.
- the ball’s force is destroyed.
- the friction of the ball changed the force to negative ions.
- the ball’s kinetic energy changed to heat through frictions.

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