Energy

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Energy

Energy

• Kinetic Energy: energy in the form of motion

– Individual Motion (e.g., batted baseball)

– Thermal Energy: energy of particles in random motion

• Potential Energy: stored energy

– Gravitational Potential (e.g., skier at top of slope)

– Electrostatic Potential (e.g., charged particles)

– Chemical Potential (e.g., batteries)

– Rest-mass Energy (nuclear physics)

– Other types

• Radiative Energy

Energy in the form of light (photons)


Thermal Energy

• Temperature measure thermal motion


Temperature Scales


Density and Pressure


Structure of the Atom

• Neutral atom has the same number of

protons as electrons


Nuclei of Atoms

• Almost all of the mass in the nucleus

• Different number or neutrons for isotopes


Electron Orbits


Energy Levels of Atoms


Phases of

Matter

• Temperature

affects the phase

of matter

• Temperature of

phase shifts

depend on the

material

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