Thursday, September 4, 2008
CHAPTER 7. / 1:27 AM
KINETIC MODEL OF MATTER-
The Basics:
solid:
*fixed shape and volume.
*normally hard and rigid;a large force is needed to change its shape.
*high density.
*incompressible.
liquid:
*fixed volume but does not have a fixed shape.
*high density
*incompressible.
gas:
*no fixed shape or volume.
*low density.
*compressible.
KEY CONCEPTS:
Particles in continuous motion is known as the kinetic model of matter.
Brownian motion is the random or irregular motion of smoke particles in air or pollen grains in water.when temperature increases,the smoke particles or pollen grains are observed to move faster and more vigorously.
Arrangement and movement of particles-
| State | Solid | Liquid | Gas |
| Arrangement of particles | -Close together | -Close together | -very Far apart |
| Movement of particles | -vibrate about fixed positions. -strong intermolecular bonds. | -free to move about but confined within the vessel. | -move about randomly at high speeds. |
| Diagram |  |  |  |
