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26 Cards in this Set
- Front
- Back
Chemistry
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the sci study of the composition, structure, and properties of matter and the change matter goes through
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Chemical
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any substance that has a defined composition
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Mass
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a measure of the amount of matter in an object
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Matter
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anything that has mass and takes up space
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Atom
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the smallest unit of an element that maintains the chemical properties of that element
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Element
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a substance that cannot be separated or broken down into simple substances by chem. mean; all atoms of element have same number
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Compound
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a substance made up of atoms of two or more different elements joined by chem. bonds
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Extensive Property
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a property that depends on the extent or size of a system
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Intensive Property
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a property that does no depend on the amount of matter present (pressure,temp)
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Physical property
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a characteristic of a substance that does not involve a chem. change (color)
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Physical change
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a change of matter from one form to another without a change in chem. properties
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Change of state
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the chance of a substance from one physical state to another
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Solid
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the state of matter in which the volume and shape of a substance are fixed
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Liquid
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a type of matter that has a definite volume but not a definite shape
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Gas
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a form of matter that does not have a definite volume or shape
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Plasma
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in physical sci, state of matter that starts as a gas and then becomes ionized...
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Chemical Property
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a property of matter that describe a substances ability to participate in chem. reactions
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Chemical Change
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a chance that occurs when one or more substances change into entirely new substance with new properties
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Chemical Reaction
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the process by which one or more substances change to produce one or more different substances
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Reactant
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a substance or molecule that participates in a chem. reaction
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Group
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a vertical column of elements in the periodic table, elements in group share chem. properties
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Family
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a vertical column of the periodic table
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Period
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in chem, a horizontal row of elements in periodic table
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Metal
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an element that is shiny and that conducts heat and electricity well
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Nonmetal
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an element that conducts heat and electricity poorly and that does not allow and electric current
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Metalloid
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and element that has properties of both metals and nonmetals; sometimes referred to as semi conductor
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