Page 172 - Science Course 1 (Book 1)
P. 172

Mo5-L3a: What is the Effect of Temperature and Energy on Matter?




               m = mass               e = mv²                     Potential energy of particles typically increases as
               v = velocity                   2                   the particles get farther apart.
               e = kinetic energy
                                                                  The farther an object is from Earth’s surface, the
                                                                  greater the gravitational potential energy.


                                                                    Potential







               Temperature is a measure of the average kinetic
               energy of translation of the gas molecule.


               High Temperature          Low Temperature






                                                                                                 Distance




                                                                  The greater the distance
                                                                  between particles, the
                              Key Concept                         greater the chemical
                      What is the Effect of Temperature and       potential energy of the
                               Energy on Matter?                  particles.
                  How is temperature related to particle motion?  Particles that make up
                                                                  gases usually are far apart
                                                                  and have high chemical
                                                                  potential energy.

                                                                  The greater the distance
                                                                  between objects, such as
                                                                  a ball, and Earth, the
                                                                  greater the gravitational
                                                                  potential energy of the
                                                                  object.

                                                                  The smaller the distance
                                                                  between particles, the less
                                                                  chemical potential energy
                                                                  of the particles.
                                                                  Particles that make up
                                                                  solids usually are close
                                                                  together and have low
                                                                  chemical potential
                                                                  energy.

                                                                  The smaller the distance
                                                                  between an object, such as
                                                                  a ball, and Earth, the less
                                                                  the gravitational potential
                                                                  energy of the object.




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