Energy, Heat, and Energy Transfer Energy Six forms of energy: mechanical, heat, electrical, wave, chemical, nuclear The many forms of energy are interchangeable Sources of energy Fossil fuels Nuclear energy Heat Heat and temperature Conduction, convection, radiation Physical Change: Energy Transfer States of matter in terms of molecular motion Most substances are solid at low temperatures, liquid at medium temperatures, and gaseous at high temperatures A change of phase is physical change Matter can be made to change phases by adding or removing energy Expansion and contraction Changing phases: condensation, freezing, melting, boiling Distillation
(Energy, Heat, and Energy Transfer Energy Six forms of energy; are; interchangeable Sources of energy Fossil fuels) (Most substances; are; solid; L:at low temperatures) (A change of phase; is; physical change Matter can be made to change phases)
Energy, Heat, and Energy Transfer Energy Six forms of energy Most substances A change of phase
are are is
interchangeable Sources of energy Fossil fuels
solid L:at low temperatures
physical change Matter can be made to change phases