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20 Cards in this Set
- Front
- Back
Three principal states of matter
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solid, liquid and a gas
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Characteristic Property Examples
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boiling point and melting point
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Atom
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the smallest particle of an element
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Molecule
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group of atoms that are joined together and act as a single unit
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Volume
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length x width x hieght: mabe be measured in cubic cm
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Mass
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the amount of matter in an object - not weight
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Density
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measurement of how much mass is in a given volume
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The force of gravity
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determines the weight of something
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Mixture
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when two or more substances are mixed together but not chemically combined (ex. sand)
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Solution
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A really well mixed mixture (ex. juice)
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Pure Substance
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something that is made of one kind of matter with definate properties
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Element
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pure substances that cannot be broken down into other substances
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Compound
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pure substance that is made up of 2 or more elements that are chemically bonded
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Chemical Bond
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force that holds 2 atoms together
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Physical change
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the form of a substance is changed, but it's idenity stays the same
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Chemical Change
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subtances combine or break apart to from new substances
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Dalton's Ideas
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*All atoms are alike in an element
*Atoms of an element have their own unique mass *Atoms cannot be broken down into smaller pieces *Atoms of 2 or more elements can combine to make a compound *The masses of elements in a compound are always in a constant ratio |
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Ore information
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The useable metal in deposits is called ore. An electrode is used to attract metal in ore. Iron is seperated from ore by heating it with carbon dioxide.
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Find the density of an object with a mass of 22 grams and a volume of 11cm.
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2 g/cm (to the third power)
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Common Units for Mass, Volume, and Density
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cm cubed, cm squared, g/cm cubed
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