Scientists believe that interactions between atoms depend mostly on the arrangement of the outermost electrons in each atom This theory is MOST supported by the observation of similar reactions among elements

The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic

Higher temperature = molecules move around faster. and vice versa.

The second and last option are the answers