Explain why atoms move at different speeds depending on whether they are in liquid or solid

Because in difrent materials atoms are more compact or less compact.if they are less compact then it will be easear for them to move

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