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22 Cards in this Set
- Front
- Back
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physical properties
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characteristics measured or detected by the senses.
ex.color,size,odor,and density |
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chemical properties
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describe how matter changes when it reacts with other matter.
ex.paper burning |
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substance
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a material that always has the same makeup and properties
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mixture
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a combination of two or more different kinds of matter that can be separated physically
ex.icecream |
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element
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a substance that cannot be broken down
ex.any listed on periodic table (copper, aluminum) |
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compound
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substance made up of two or more elements that are joined chemically
ex. salt= sodium + chloride |
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atom
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smallest particle of an element that has the chemical properties of the element
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chemical symbol
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one or two letters that stand for the name of an element
ex. Carbon= C |
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Molecules
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A particle made up of a group of atoms that are chemically combined.
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chemical formula
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group of symbols that shows the elements in a compound.
ex. water= H20 |
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solution
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mixture in which the different particles of matter are spread evenly.
solutions have 2 parts-solvent & solute |
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solvent
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the material that is present in the greater amount
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solute
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material present in the smaller amount
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chemical change
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change in matter that results in new substances with new properties.
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cohesion
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a force of attraction that exists among water particles
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physical change
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a change in size,shape,or state of matter.
No new kind of matter is formed. |
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alloy
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a solution of two or more metals
ex. Broze is an alloy of copper and tin |
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Carbon Dioxide
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CO2
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Sugar
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C12,H22,O22
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Cholesterol
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C27,H45,OH
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How can we tell the difference between a compound and a mixture?
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You can physically separate a mixture
Compounds are chemically combined |
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Suspension
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a mixture in which very small particles remain suspended without dissolving
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