1/26/10
Post date: Jan 26, 2010 8:49:12 PM
Bell Ringer: How can you make matter change from one state to another?
Finish 3.1 notes
Energy
All moving objects have KINETIC energy
Since all matter is made of atoms and molecules that are constantly moving, each atom and molecule has kinetic energy
Temperature
A measurement of the AVERAGE kinetic energy of the atoms that make up a substance
We experience this as how hot or cold something is
Hot things have a higher temperature than cold things
Thermal energy
A measurement of the TOTAL kinetic energy of the atoms that make up a substance
More particles (atoms) means more thermal energy
Hot things may or may not have more thermal energy than cold things; it depends on the sizes of each
3.2 Notes
HW: Page 81: 1-7