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Chemistry CH. 3

Intro to Chemistry Priniciples; Unit systems & Dimensional Analysis

TermDefinition
density mass per unit volume
volume amount of space an object takes up
mass amount of matter
area A measure of the extent of a surface
conversion factor A ratio that converts a measure expressed in 1 unit to a measure expressed in another unit. EX 1 min = 60 sec.
cubic meter The SI system base unit of volume
dimensional analysis A general problem-solving method in which the units associated with numbers are used as a guide in setting up calculations.
equality conversion factor a ratio that converts one unit of a given measure to another unit of the same measure. 1m /100cm or 100 cm / 1m
equivalence conversion factor a ratio that converts one type of measure to a different type of measure. EX. 2.54 cm. = 1 in.
kilogram The fundamental SI unit of mass.
liter A volume equal to that of a cube whose sides are 1 dm or 10cm.
meter The SI system base unit of length.
percent Parts per hundred (# of items of a specified type in a group of 100 items)
percent error Compares a measured value with its accepted value.
SI Base unit One of 7 SI units of measurement from which all other SI measurement units can come from.
SI-derived unit An SI unit derived by combining two or more SI base units.
SI system of units The preferred metric unit system in all scientific work
temperature A measure of the hotness or coldness of an object
weight A measure of the force exerted on an object by gravitational forces.
Celsius, Kelvin, and Fahrenheit scales 3 major temperature scales
Popular Chemistry sets

 

 



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