Chapter8KineticModelofMatterWelcometoSFPOnline8章动力学模型的物质欢迎SFP在线

1、learning outcomes compare the properties of solids, liquids and gases describe using models the structure of solids, liquids and gases describe the relationship between motion of molecules and temperaturethree states of matter solid liquid gas for example, iceberg, sea water and steamstates of matte

2、rphysical properties of solids, liquids and gasessolidliquidgas fixed shape fixed volume fixed volume does not have fixed shape assumes shape of container no fixed shape no fixed volume assumes the shape and volume of container not compressible not easily compressible highly compressible does not fl

3、ow easily flows easily flows easilykinetic model the kinetic theory of matter states that all matter is made up of a large number of tiny atoms or molecules which are in continuous motion. molecules are too small to be seen directly. existence of particles in continuous motion has been demonstrated

4、by brownian motion and diffusion. find out what these are! kinetic modelmotion of molecules and temperature when temperature increases, thermal energy of the molecules increases and the molecules move faster. the molecules gain kinetic energy.we can use this model to explain the physical properties

5、of solids, liquids and gases.an explanation of solids, liquids and gasessolidliquidgasparticles close togethercan not move past each otherparticles close togethercan move past each otherparticles far apartcan move past each other forces holding particles together are large forces holding particles t

6、ogether are less forces holding particles together are smallincreasing k.e. causes greater vibration higher temperaturesincreased k.e. means particles have enough energy to move past each otherincreasing k.e. causes particles to move far apart. so gases can be compressedthe three states of matter ar

7、e solid, liquid and gas.when the temperature increases, kinetic energy of the molecules also increases.kinetic model of mattert h e m e t h r e e : t h e r m a l p h y s i c sc h a p t e r8kinetic model of mattert h e m e t h r e e : t h e r m a l p h y s i c sc h a p t e r8kinetic model of mattert h e m e t h r e e : t h e r m a l p