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Chemisty III
Chapter 2, Test
26
Chemistry
10th Grade
09/30/2010

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Term
Base Unit
Definition
defined unit in a system of measurement. it is independent of other units
Term
Second
Definition
SI base unit for time
Term
Meter
Definition
SI baseunit for length
Term
What is a kilogram?
Definition
SI base unit for mass
Term
What are three different types of temperature?
Definition
Celsius, Fahrenheit, and Kelvin.
Term
How do you convert temps?
Definition
1.8(?F) + 32 = ?

or

K = C + 273
Term
What is a derived unit?
Definition
unit defined by a combination of base units
Term
What is a liter?
Definition
metric unit for volumn. equal to one cubic decimeter
Term
What is density? what is the equation?
Definition
density = mass/volumn
Term
What is scentific notation?
Definition
10 to the 3.... etc
Term
Practice Scientific Notation Problems on page 43
Definition
Term
What is deminsional analysis?
Definition
problem solving that uses conversion factors to get an answer
Term
What is a conversion factor?
Definition
ratio of equivalent values to express the same quantity but in diff units;
Term
Practice conversion factors on page 44 and 45
Definition
Term
What is accuracy?
Definition
refers to how close a measured value is to an accepted value
Term
What is precision?
Definition
series of meaurements in reference to one anothr
Term
What is error?
Definition
difference between an accepted value and experimental value
Term
What is percent error?
Definition
ratio error to accepted value
Term
Practice significant figures on page 51
Definition
Term
What is a graph?
Definition
visual display of data
Term
Where do indepentant and dependent variables go on a graph?
Definition
blah vs. halb

blah goes on left, halb goes on the bottom
Term
What is interpolation?
Definition
already given information on a graph there is no predicting
Term
What is extrapolation?
Definition
all predicting, 50/50 guesses
Term
Give Symbol and Quantity:

Meter
Kilogram
Second
Ampere
Kelvin
Candela
Mole
Definition
1) m -length
2) kg -mass
3) s -time
4) A -electric current
5) K -thermodynamic temp
6) cd -luminous intensity
7) mol -amt of substance
Term
G
M
K
D
C
M
M
N
P
fill out! powers & prefix
Definition
Giga = 10^9
Mega = 10^6
Kilo = 10^3
Deci = 10^-1
Centi = 10^-2
Milli = 10^-3
Micro = 10^-6
Nano = 10^-9
Pico = 10^-12
Term
What is absolute zero?
Definition
when there is no kinetic enery at the atomic/molecular level
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