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15 terms

Chemistry Unit 3:2

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International System of Units (SI)
scientists use this metric based system
meter
The basic SI unit of length
liter
Basic unit of volume in the metric system
weight
the force exerted by a mass as a result of gravity
kilogram
1000 grams
gram
a metric unit of weight
temperature
a measure of how hot or cold something is
Celsius
a temperature scale that defines the freezing point of water as 0 degrees and the boiling point of water as 100 degrees
Kelvin
SI unit of temperature; indicates number of units above absolute zero. To go from Celsius to Kelvin add 273. To go from Kelvin to Celsius subtract 273.
absolute zero
The coldest temperature, 0 Kelvin, that can be reached. It is the hypothetical temperature at which all molecular motion stops.
energy
the ability to do work
joule
si unit of energy
calorie
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
Density
mass/volume
Conversion factor
a ratio derived from the equality between two different units that can be used to convert from one unit to the other