chem 120 final exam study
guide
chemistry - answers-the science that tries to understand how matter behaves by
studying how atoms and molecules behave
scientific method - answers-ways of learning that emphasizes observation and
experimentation (self-correcting)
observation - answers-we go out in nature and ask questions we measure or observe
some aspect of nature
hypothesis - answers-tentative interpretation of an observation
law - answers-summarizes a large number of observations
theory - answers-model that explains and gives underlying causes for observation
imprecise - answers-quick and easy like color
precise - answers-measuring and proving like numbers
scientific notation - answers-1x10^6
significant figures - answers-indicates how good or bad a measurement is
all non zeros are - answers-significant
interior zeros - answers-significant
trailing zeros before a decimal place - answers-significant
trailing zeros after decimal place - answers-significant
16.5400 - answers-6 sig figs
130. - answers-3 sig figs
, 5003 - answers-4 sig figs
exact numbers - answers-unlimited sig figs
3 - answers-unlimited sig figs
multiplication and division - answers-determined by the number with the fewest
significant figures
addition and subtraction - answers-determined by decimal place
tera - answers-T 10^12
giga - answers-G 10^9
mega - answers-M 10^6
kilo - answers-k 10^3
cent - answers-c 10^-2
mile - answers-m 10^-3
micro - answers-u 10^-6
nano - answers-n 10^-9
Pico - answers-p 10^-12
femtohm - answers-f 10^-15
how many pounds does a person who weighs 14.8 stone weight
stone = 14 lbs. - answers-207 lbs.
convert 3.0 cm2 to mm2 - answers-300 mm2
density - answers-mass/volume
if 5.32g of ethanol takes up 6.74ml of volume, what is the density in g/ml - answers-
0.789 g/ml
matter - answers-Anything that has mass and takes up space
can you undo a physical change - answers-yes
can you undo a chemical change - answers-yes but it is very very difficult
guide
chemistry - answers-the science that tries to understand how matter behaves by
studying how atoms and molecules behave
scientific method - answers-ways of learning that emphasizes observation and
experimentation (self-correcting)
observation - answers-we go out in nature and ask questions we measure or observe
some aspect of nature
hypothesis - answers-tentative interpretation of an observation
law - answers-summarizes a large number of observations
theory - answers-model that explains and gives underlying causes for observation
imprecise - answers-quick and easy like color
precise - answers-measuring and proving like numbers
scientific notation - answers-1x10^6
significant figures - answers-indicates how good or bad a measurement is
all non zeros are - answers-significant
interior zeros - answers-significant
trailing zeros before a decimal place - answers-significant
trailing zeros after decimal place - answers-significant
16.5400 - answers-6 sig figs
130. - answers-3 sig figs
, 5003 - answers-4 sig figs
exact numbers - answers-unlimited sig figs
3 - answers-unlimited sig figs
multiplication and division - answers-determined by the number with the fewest
significant figures
addition and subtraction - answers-determined by decimal place
tera - answers-T 10^12
giga - answers-G 10^9
mega - answers-M 10^6
kilo - answers-k 10^3
cent - answers-c 10^-2
mile - answers-m 10^-3
micro - answers-u 10^-6
nano - answers-n 10^-9
Pico - answers-p 10^-12
femtohm - answers-f 10^-15
how many pounds does a person who weighs 14.8 stone weight
stone = 14 lbs. - answers-207 lbs.
convert 3.0 cm2 to mm2 - answers-300 mm2
density - answers-mass/volume
if 5.32g of ethanol takes up 6.74ml of volume, what is the density in g/ml - answers-
0.789 g/ml
matter - answers-Anything that has mass and takes up space
can you undo a physical change - answers-yes
can you undo a chemical change - answers-yes but it is very very difficult
