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31 Cards in this Set
- Front
- Back
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absolute zero
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the lowest possible temperature; the zero point of the Kelvin temperature scale
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calorie
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the amount of heat necessary to raise the temperature of 1 g of liquid water by 1 degree Celsius
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Celsius scale
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a temperature scale based on 0 degrees as the freezing point of water and 100 degrees as the normal boiling point of water
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chemical property
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a chemical reaction that a substance undergoes
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chemistry
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the science that deals with matter
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conversion factor
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a ratio of two different units
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density
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the ratio of mass to volume for a substance
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energy
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the capacity to do work. The SI base unit is the Joule (J)
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fact
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a statement based on experience
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factor-label method
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a way of doing conversions in which units are multiplied and divided
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hyperthermia
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having a body temperature higher than normal
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hypothermia
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having a body temperature lower than normal
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hypothesis
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a statement that is proposed, without actual proof, to explain certain facts and their relationship
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International System of Units (SI)
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a system of units of measurement based in part on the metric system
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Joule (J)
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the SI base unit for heat; 4.184 J is 1 cal
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Law of Conservation of Energy
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energy can be neither created nor destroyed
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Mass
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the quantity of matter in an object; the SI base unit is the kilogram; often referred to as weight
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Matter
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anything that has mass and takes up space
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Meter
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the SI base unit of length
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Metric system
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a system in which measurements of parameter are related by powers of 10
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physical change
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a change in matter in which it does not lose its identity
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physical property
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characteristics of a substance that are not chemical properties; those properties that are not a result of chemical change
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potential energy
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energy that is being stored; energy that is available for later use
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scientific method
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a method of acquiring knowledge by testing theories
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SI
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International System of Units
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significant figures
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numbers that are known with certainty
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specific gravity
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the density of a substance compared to water as a standard
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specific heat
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the amount of heat (calories) necessary to raise the temperature of 1 g of a substance of 1 degree Celsius
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theory
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a hypothesis that is supported by evidence; a hypothesis that has passed tests
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volume
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the space that a substance occupies; the base SI unit is the cubic meter
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Weight
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the result of a mass acted upon by gravity; the base unit of measure is a gram
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