How is a hypothesis developed and evaluated?

The way the hypothesis is developed and created is when there is a problem and you are trying to solve it. The hypothesis usually includes the words, "Ifthen". The way it's evaluated, is at the end of the science experiment where you did your experiment and compare your answers to what you put as your hypothesis, and if they match, your hypothesis is right!
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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