Intro Phys Chem
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Science | "the experimental investigation and explanation of natural phenomena"
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| Technology | the application of scientific knowledge
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| Chemistry | the study of matter and the transformations it undergoes
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| Matter | "stuff"; anything that has mass and occupies space
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| Pure Substance | only a single type of matter is present
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| Mixtures | occur when two or more pure substances substances are intermingled with each other
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| Homogeneous Mixture (Solution) | mixtures in which the composition of the mixture is identical throughout
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| Heterogeneous Mixture | a mixture that's composition is not the same throughout
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| Atom | the smallest possible piece of an element
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| Elemental Substance | pure substance that is made from atoms of just one element
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| Compound | pure substances made from atoms of two or more different elements
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| Chemical Formula | indicates the number of atoms of each element that make up the smallest piece of that compound
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| Physical Transformation | transformation that leaves a substance as the same substance but in a different physical state
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| States of Matter | solid,liquid, and gas
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| Freezing | the change from a liquid to a solid
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| Melting | the change from a solid to a liquid
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| Vaporization | the change from a liquid to a vapor
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| Condensation | the change from a vapor to liquid state
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| Physical properties | characterize a pure substance's physical state and behavior
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| Sublimation | the change from a solid to a gas without passing through the liquid state
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| Chemical Change (Chemical Transformation) | a change that causes a pure substance to become a different substance(s)
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| Chemical Properties | properties that can only be described when a pure substance undergoes a chemical change
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| Reactants | starting substances in a chemical reaction
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| Products | new substances formed during a chemical reaction
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| Chemical Reaction | the process that goes on during the conversion of reactants to products
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| Element | the basic building blocks of matter
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| Exact Number | a numerical value with no uncertainty; able to be counted
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| Measurement | use of tools to ascertain the numerical value
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| Precision | the closeness to one another of a series of measurements made on the same object
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| Accuracy | the closeness of the measured result to the true value
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| Leading Zeros | all the zeros that precede the first nonzero digit
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| Trailing Zeros | those that appear to the right of the last nonzero digit in the number
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| Scientific Notation | writing the numerical quantity as a number multiplied by 10 raised to an exponent
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| SI Units | Standardized international system of measurement used everywhere but the US. These include: meter, kilogram, second, kelvin, and mole.
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| Derived SI Units | Combinations of the base SI units. These include: cubic meter, pascal, joule, and coulomb.
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| Volume | Amount of space occupied by an object
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| Pico- (p) | one-trillionth (10^-12)
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| Nano- (n) | one-billionth (10^-9)
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| Micro- (μ) | one-millionth (10^-6)
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| Milli- (m) | one-thousandth (.001)
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| Centi- (c) | one-hundredth (.01)
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| Deci- (d) | one-tenth (.1)
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| Kilo- (k) | one thousand (1000)
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| Mega- (M) | one million (10^6)
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| giga- (G) | one billion (10^9)
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| Mass | quantity of matter in an object
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| Weight | strength of the gravitational force exerted on an object
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| Density | measure of the compactness of matter
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| Intensive Property | a property that does not depend on the amount of material
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| Extensive Property | a property that does depend on the amount present
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Created by:
smillner
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