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Chapter 1
Scientific Method and the Metric System
23
Chemistry
9th Grade
01/07/2008

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Term
Scientific Method
Definition
an organized way to solve a problem
Term
7-Step Method
Definition
  1. Define the problem and state as a question
  2. Collect information
  3. Form a hypothesis (solution)
  4. Test hypothesis (experiment)
  5. Record observations
  6. Draw conlclusions
  7. Report results
Term
hypothesis
Definition
solution to a problem
Term
S. I. Units
Definition
System International - Metric
Term
Why most countries use the Metric System
Definition
It's easy - based on units of 10
Term
4 Types of Metric Measurement
Definition
TYPE BASE UNIT SYMBOL
length meter m
mass gram g
volume liter L
time second s
Term
volume
Definition
The amount of space occupied by an object
Term
water displacement
Definition
the method to finding the volume of an irregularly shaped object
Term
Metric Prefixes/Values
Definition
SYMBOL PREFIX VALUE
T tera trillion
G giga billion
M mega million
k kilo thousand
h hecto hundred
da deka ten
-b- -base- one
d deci tenth
c centi hundredth
m milli thousandth
u micro millionth
n nano billionth
p pico trillionth
Term
**to remember the metric prefixes, remember "THE GOOD MAN king henry died-a by drinking chocolate milk using nasty poison.
Definition
SYMBOL PREFIX VALUE
T tera trillion
G giga billion
M mega million
k kilo thousand
h hecto hundred
da deka ten
-b- -base- one
d deci tenth
c centi hundredth
m milli thousandth
u micro millionth
n nano billionth
p pico trillionth
Term
mass
Definition
the amount of matter in an object (measured in grams)
Term
weight
Definition
measurement of the force/pull of gravity on an object (measured in Newtons)
Term
gravity
Definition
the attraction/force of Earth on objects
Term
matter
Definition
anthing that takes up space
Term
triple beam balance
Definition
single pan balance used to measure mass (measured in grams)
Term
spring scale
Definition
used to measure weight (calibrated in Newtons)
Term
supplimental mass
Definition
increases capacity of triple beam balance
Term
meter stick
Definition
tool used to find length (calibrated in centimeters)
Term
graduated cylinder
Definition
tool used for finding volume (calibrated in milliliters)
Term
value per line
Definition
value of a section
lines in section
Term
density
Definition
amount of mass packed into a certain space OR mass per unit of volume
Term
density of water
Definition
1 g/cubic cm
Term
energy
Definition
the ability to work
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