Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
23 Cards in this Set
- Front
- Back
|
abosolute zero
|
the zero point on the kelvin temperature scale, equivalent to -273.15 degrees C; all molecular motion theoretically stops at this temp.
|
|
|
accepted value
|
a quantity used by general agreement of the scientific community
|
|
|
accuracy
|
the closeness of a measurement to the true value of what is being measured
|
|
|
Celsius scale
|
the temp. scale--> freezing is 0 degress and boiling is 100 degrees
|
|
|
density
|
the ratio of the mass of an object to its volume
|
|
|
error
|
the difference between accepted value and experimental value
|
|
|
experimental value
|
a quanitive value measured during an experiment
|
|
|
gram
|
a metric mass unit equal to the mass of 1 cubic cm of water at 4 degrees C
|
|
|
hydrometer
|
a device used to measure the specific gravity of liquid
|
|
|
Kelvin scale
|
temp. scale --> freezing point is 273 K and boiling is 373 K; 0 K is absolute zero
|
|
|
kilogram
|
the mass of 1 L of water at 4 degrees; base unit of mass
|
|
|
liter
|
volume of cube measuring 10 cm on each edge; common unit of volume
|
|
|
meter
|
base unit of length in SI
|
|
|
percent error
|
the percent that a measured value differs from the accepted value
|
|
|
precision
|
describes the closenss, or reproducibility, of a set of measurements taken under the same conditions
|
|
|
qualitative measurement
|
a measurement that gives descrptive, nonumeric results
|
|
|
quantitive measurement
|
a measurement that gives definite, usually numeric results
|
|
|
scientific notations
|
express numbers n x 10^n where n is equal or greater than 1 and less than 10 and n is an integer
|
|
|
significant figures
|
all the digits that can be known precisely in a measurement, plus a last estimated digit
|
|
|
specific gravity
|
the ratio of the density of a substance to that of a standard substance
|
|
|
temperature
|
a measure of the average kinetic energy of paticles in matter; temp. determines the direction of heat transfer
|
|
|
volume
|
the space occupied by a sample of matter
|
|
|
weight
|
force that measures the pull of gravity of a given mass
|
