Science 3/28/23
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Science test
Last updated 2:56 AM on 3/28/23
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31 Terms
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Matter
Anything that has mass and takes up space
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Solid
Matter that has a definite shape and volume
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liquid
matter that does not have a definite shape but does have a definite volume
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gas
matter that does not have a definite shape or volume
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pure substance
made up of only one type of matter
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homogeneous
every part of the substance has the same composition as every other part
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mixture
made up of two or more different substances
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mechanical mixtures
A mixture that does not have the same appearance throughout
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heterogeneous
A mixture where can see the differences with the naked eye
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heterogeneous mixtures
mechanical mixtures
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Solutions
the same appearance throughout, but are made up of two or more substances
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Particles
very small portions of matter
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The particle theory of matter
a theory that describes matter.
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Kinetic energy
the energy of movement.
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Temperature
the measure of the average kinetic energy of the particles in a substance
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Heat
the energy that transfers from a substance at a higher temperature to one at a lower temperature
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A change of state
a change from one physical state of matter (solid, liquid, gas) to another
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Look over this diagram
.
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melting
The change of state from a solid to a liquid
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evaporation
The change of state from liquid to gas
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condensation
The change of state from gas to liquid
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freezing/solidification
The change of state from liquid to solid
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sublimation
The change of state from solid to gas
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deposition
The change of state from gas to solid
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Particle Theory of Matter Rule #1
All matter is made up of particles
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Particle Theory of Matter Rule #2
All particles of one substance are identical
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Particle Theory of Matter Rule #3
The particles of matter are in constant motion
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Particle Theory of Matter Rule #4
Temperature affects the speed at which particles move
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Particle Theory of Matter Rule #5
Particles have forces of attraction between them
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Particle Theory of Matter Rule #6
There are spaces between particles
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Mass
the amount of matter in an object
Note 
Flashcards (71)