Chapter 2 Vocabulary Chem
Terms
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- absolute zero
- the temperature at which all molecular motion theoretically stops
- accuracy
- closeness of a single measurement to the actual dimension or true value of a quantity
- base unit
- fundamental defined unit of measurement
- energy
- (joule) (J) the capacity to do work
- fixed point
- a reproducable natural phenomenon
- force
- (Newton) (N) a push or pull
- heat
- (joule) (J) a form of energy that flows from areas of high temperature to areas of low temperature
- length
- (meter) (m) the straightline distance between 2 points
- mass
- (kilogram) (kg) (gram) (g) the amount of matter in a substance
- precision
- the closest of several measurements made in teh same way to each other
- qualitatve data
-
-gives results in a descriptive non-numeric form
-word description - significant digits
- all the digits in a measurement known with certainty plus the first uncertain digit
- temperature
-
(kelvin) (K)
-the relative hottness or coldness of a substance
-the relative heat content of a substance - time
- (second) (s) interval between two events
- volume
- (liter) (L) amount of space a substance takes up
- quantitative data
-
-gives results in a definite form with numbers
-measurements - weight
- (Newton) (N) measure of the pull of gravity on a substance