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Science Vocabulary

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Term
Definition
Atom   Building Block of matter  
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Element   Most pure type of matter, can't be broken down  
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Nucleus   The brain of an atom  
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Electron Shell   The barrier between a nucleus and electrons  
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Fire Extinquisher   Used to put out a fire in a lab  
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Neutron   a neutral charge that makes isotopes in an atom  
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Electron   A negative charge that makes ions in an atom  
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Valence Electrons   The number of electrons on the outermost shell.  
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Volume   The amount of space an object takes up  
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Graduated Cylinder   Measures how much liquid is in it and can be used to find volume  
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Density   How compact something is  
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Speed   The distance traveled in an amount of time  
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Velocity   Objects speed and direction at a given instant  
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Acceleration   Change in velocity over time  
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Force   A push or a pull  
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Balanced force   Force that doesn't make something move; has a net force of 0  
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Unbalanced force   Force that makes something move; doesn't have a net force of 0  
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Newton   Measure of force on an object  
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Mass   The amount of matter an object conatains  
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Newtons 1st Law   Objects in motion will stay in motion and objects at rest will stay at rest until acted on by an outside force.  
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