Download presentation
Presentation is loading. Please wait.
Published byAubrie Tate Modified over 9 years ago
2
Reminders States of Matter solids: fixed volume, rigid, definite shape ○ examples? liquids: flowing matter, definite volume, indefinite shape ○ examples? gases: flowing, compressible, indefinite shape ○ examples?
3
Kinetic Theory of Matter submicroscopic particles of all mater are in constant, random motion energy of moving objects is called kinetic energy derived from Brownian motion (Robert Brown): constant, random motion of tiny chunks of matter
4
Kinetic Model of Gases gas moves like an air-hockey puck; straight until hits the wall of the container or other particle, however unlike the puck, doesn’t lose kinetic energy with striking; rebounds w/o losing speed in a new direction = elastic collisions ideal gas = elastic collisions pressure = force acting on a unit area of a surface ex. outward pressure of air inside a balloon = force to keep it expanded Earth’s atmosphere = atmospheric pressure
5
Kinetic Model of Liquids particles of liquids are closer together so don’t move as straight or smooth similar to marbles (constant V, not shape) spread evenly to fill container if swirled, marbles flow if tipped, flow onto the table
6
Kinetic Model of Solids strong forces between particle -> rigid structure particles cannot move past each other but are in constant motion fixed position in a 3D arrangement = crystal lattice
7
Changes in State Evaporation What makes something evaporate faster? Condensation Sublimation
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.