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3 states of matterAP

QuestionAnswer
Matter Anything that occupies space and has mass. All matter is made up of moving particles
Examples of matter wood, air, rock and metal. (W.A.R.M.)
Examples of pure substances of matter (all parts are chemically identical) sugar and salt
change of state when matter changes from one form to another.
types of change in state in volume and density but not total mass
the three states of matter solids, liquids and gases
solid particles are vibrating but have a fixed shape and stay in the same position. They are strongly attracted to each other and are regularly arranged and close together.
liquid particles are moving rapidly but are close together, can change their shape and are attracted to each other. They have no fixed position and a randomly arranged.
gas particles are moving rapidly in all directions, take on the shape of their container. They are randomly arranged, far apart and are not attracted to each other.
expansion is when you heat solids, liquids and gases. the particles don't get bigger but they get further apart
diffusion when moving particles spread out and mix together.
changing from one state to another energy is needed
melting point the temperature at which particles MOVE away from their FIXED position
boiling point the temperature at which particles BREAK away from each other completely and turn into bubbles of gas.
pressure when gas particles pound against the walls of their container. Higher the temperature the greater the pressure.
density
evaporation
expansion
Created by: aimeeintheuk
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