What might cause a theory to change over time?

a theory does not change into a scientific law with the accumulation of new or better evidence. a theory will always remain a theory; a law will always remain a law. both theories and laws could potentially be falsified by countervailing evidence. theories and laws are also distinct from hypotheses.

explanation:

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.

elements make up everything, and they combine to make compounds.

the answer is c