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39 Cards in this Set
- Front
- Back
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A natural science; the study of matter, its composition, properties, and changes it undergoes
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Chemistry
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A way of solving problems or answering questions
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Scientific Method
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A thoroughly tested model that explains why things behave a certain way; can’t be proven
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Theory-
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Anything that takes up space and has mass
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Matter
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Smallest particle of matter that retains its unique properties
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Element
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Smallest particle of matter that retains its unique set of characteristics and is made of elements, in a set ratio; ionic or covalent
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Compound
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Two or more atoms bonded together with fixed mass %, same or different
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Molecule
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All the same composition throughout
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Substance
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More than one kind of matter; at least 2 substances; each part keeps properties
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Mixture
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Same composition throughout
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Homogeneous
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Different composition in different places
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Heterogeneous
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Different “forms” of the element
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Allotropes
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Matter that can’t flow and has a definite volume
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Solid
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Definite volume, but takes the shape of its container (flows)
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Liquid
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A substance without definite volume or shape and can flow
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Gas
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Heated substance until ionization
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Plasma
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Very cold (4K); many atoms act like one atom
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Bose-Einstein Condensate
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Can be studied without a change in structure or composition
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Physical Properties
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Molecules or ions undergo a change in structure or composition
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Chemical Properties
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A property that does not change with the amount of substance
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Intensive Properties
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A property that changes with the amount of substance
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Extensive Properties
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A change that changes appearances, without changing the composition
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Physical Change
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A change where a new form of matter is formed; not easily reversed
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Chemical Change
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Has 2 things: number and scale (unit)
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Measurement
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Based on metric system and units derived from metric system
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International System
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Mass divided by volume
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Density
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Total kinetic energy of molecules
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Heat
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Average kinetic energy of molecules
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Temperature
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Amount of heat needed to raise the temperature of 1gram of a substance in a specific physical state by 1ºC
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Specific Heat Capacity
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Heat is given off
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Exothermic
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heat is absorbed
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endothermic
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Study of Compounds with carbon-carbon bonds
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Organic Chem.
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Study of compounds without carbon
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Inorganic Chem.
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study of chemicals of life
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Biochemistry
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Theoretical study
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Physical Chem.
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With money or a task involved
(a study) |
Applied Chem.
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the study with Money, composition
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Analytical
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how many DiAtomic elements?
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7
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Indications of a chemical change
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energy released or absorbed (heat)
Color change Gas released Light given off Precipitate- solid that evaporates from solution |
