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31 Cards in this Set

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