test 1 Flashcards
(48 cards)
intensive properties
density, temperature melting point, color
extensive properties
volume, mass
physical properties
tempature, color, melting point, odor
chemical properties
rusting, combustion, hardening
how many kilometers= one meter
1000
how many megameters= one meter
1,000,000,000
how many picometers in one meter
100,000,000,000
how many centimeters in one meter
100
how many milimeters in one meter
1000
pure substance
made up of only one type of particle
(one component), and its composition is invariant
specific heat
the amount of ebnergy required to raise the tempature of 1g of a substance by 1 degree K
mixture
a substance composed of two or more
components in proportions that can vary from one
sample to another.
homogeneous mixture
same proportion of components
throughout/appearance/same phase (KOOL AID)
heterogeous mixture
different proportion of components
throughout/appearance varies/different phases ( STEW)
1dm^3=
1L
1cm^3=
1mL
when an element or compound has a large specific heat it means that they are good_______
insulators
when an element or compound has a small specific heat it means that they are good ________
conductor
specific heat
amount of energy required to raise the temp of 1g of a substance by 1 degree
acuracy
how close to the actual value
precision
how close the measurements match one another
random error
equal chance of measurement being too high or too low
systematic error
either too high or too low because of a calibration error
what are the ways to separate a pure substance
filtration, centerfusion, evaporation
