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Chemistry CH. 3
Intro to Chemistry Priniciples; Unit systems & Dimensional Analysis
Term | Definition |
---|---|
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 |