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Chemistry Unit 1

Terms

undefined, object
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D
deci
Mega
1 000 000 or 10^6
quantitative
gives definite numerical results and always has units
physical
the theory of chemistry
accuracy
how close a measurement is to a true value
milli
000.1 or 10^-3
precision
how finely stated measurement is and how close a set of values are to each other
qualitative
gives indefinite descriptive results
Volume
amount of space that a substance takes up (measured in litres))
M
Mega
micro
0.000 001 or 10^-6
Organic
study of substances composed of carbon
difference between K and C
273
Density
the mass if an object per unit volume
theory
explains what happens (can change)
temperature
kelvin
technology
the use of scientific knowledge for practical purposes
length
meter
pico
0.000 000 000 001 or 10^-12
temperature
a measure of the average kinetic engery of a substance
centi
00.1 or 10^-2
experiment
test hypothesis
observation
recognize a problem/something of interest
deci
0.1 or 10^-1
law
tells what happens (never changes)
kilo
1000 or 10^3
pure science
"knowledge for knowledge sake"
hypothesis
prediction "if...then.."
n
nano
SigFigs
Dot right not left
models
used to study something indirectly
time
second
K
kilo
u
micro
biochemistry
biological system
Density Equation
d=m/v
amount
mole
analytical
what substance and how much present in a sample
nano
0.000 000 001 or 10^-9
m
milli
c
centi
p
pico
inorganic
all other substances
mass
kilogram
percent relative error
%error=l experimental-theoretical l/theoretical x 100

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