Adding or removing a single atom will turn a molecule into a molecule of a different substance. how is combining atoms to form a molecule like mixing ingredients for a recipe? pick the correct option.

a.
molecules have the same properties as their atoms, just like the finished recipe looks the same as its ingredients.

b.
the ingredients for a recipe must be combined in the right proportions, just like atoms combine to form molecules.

c.
atoms can be replaced without changing the molecule, just like ingredients in a recipe can be substituted.

d.
the ingredients for a recipe can be combined in any amount, just like atoms combine to form molecules.

Why do the strengths of london (dispersion) forces generally increase with increasing molecular size? choose one: a. heavier atoms have stronger attractions for each other than lighter atoms. b. dispersion forces are all equal in magnitude; there is no size dependence. c. dispersion forces arise from the attraction between the nuclei of atoms, and larger molecules have larger nuclei. d. dispersion forces arise from dipoles caused by the electron distribution being distorted. larger molecules have more electrons and, therefore, more distortions and a bigger force. e. dispersion forces depend on distance. larger molecules are farther apart and so the forces are smaller.