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7 Cards in this Set

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  • Back

Describe a solid

-Strong forces of attraction between particles


-Have a fixed pattern (lattice)


-Atoms vibrate but can't change position therefore fixed volume and shape.

Describe a liquid

-Weaker attractive forces than solids


-No fixed pattern, liquids take up the shape of their container but have a fixed volume


-Particles slide past each other

Describe a gas

-Almost no intermolecular forces


-Particles are far apart, and move quickly


-They collide with each other and bounce in all directions

Describe diffusion

The process in which particles mix/spread by colliding randomly with each other, and bouncing off in all directions.

Evidence for diffusion in liquids

Potassium Manganate (Vll) in a beaker of water.

Evidence for diffusion in gases

A gas jar of air and a gas jar of bromine are connected, the bromine travels up the tube.

Factors that affect the rate of diffusion

-Temperature increases -> rate of diffusion increases.


-Particle mass decreases -> rate of diffusion increases .


-Dissolving can be sped up by stirring.