Chapter 9 - Kinetic Particle Model
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9 Terms
Absolute zero
The lowest possible temperature at which the particles have the least kinetic energy
Why do liquids take up the shape of their container
Because they are free to move about within the liquid
Why do gases fill their container
Because their particles can move about with complete freedom
Why do solids keep their shape
Their particles are packed tightly together
Why do gases diffuse
Gas particles are free to move
Why do dissolved substances diffuse throughout a liquid
The dissolved substances molecules are carried by mobile particles
Why does a gas cause pressure on the walls of its container
The particles of a gas move around inside its contained, bumping into the sides. The gas causes pressure on the walls of the container because the gas particles are constantly colliding with the walls.
define internal energy
Total energy of all the particles
Define temperature
A measure of the average kinetic energy of the individual particles