Flashcards in Ch.2: Measurement and Problem Solving Deck (22)
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1
2 rules to express a number in scientific notation:
1. move the decimal point to obtain a number between 1-10
2. Positive- right Negative- left
2
6 rules to determine the number of significant figures in a number
1. all NONZERO digits are significant
2. ZEROS BETWEEN NUMBERS are significant
3. Zeros to the right of a nonzero number that fall after a decimal point are significant
4. ZEROS to the LEFT of the first nozero number are not significant (.0005)
5. Zero's with no decimal point are not significant
3
The most convenient system for science measurement is based on the metric system and is called
International System SI
4
the base unit of length
meter
5
the base unit of mass
kilogram
6
the base unit of time
seconds
7
the _____ of an object is a measure of quantity of matter within it, while the weight of an object is a measure of the gravitational pull on that matter
mass
8
List: kilo
SYMBOL
MEANING
MULTIPLIER
K
thousand
10^3
9
Hecto:
SYMBOL
MEANING
MULTIPLIER
h
hundred
10^2
10
Deca:
SYMBOL
MEANING
MULTIPLIER
da
ten
10
11
Deci:
SYMBOL
MEANING
MULTIPLIER
d
tenth
10^-1
12
Centi
SYMBOL
MEANING
MULTIPLIER
c
hundreth
10^-2
13
milli
SYMBOL
MEANING
MULTIPLIER
m
Thousandth
10^-3
14
micro
SYMBOL
MEANING
MULTIPLIER
u
Millionth
10^-6
15
nano
SYMBOL
MEANING
MULTIPLIER
n
billionth
10^-9
16
Conversion Equivalents: inches=centimeters
1 inch=
2.54 centimeters
17
Conversion Equivalents: quart=pints
1 quart=
2 pints
18
Conversion Equivalents: Quart=mL
1 quart=
946 mL
19
Conversion Equivalents: Pounds to Kg
1 kg
2.2 pounds
20
4 step Problem-Solving Strategy
identify the given information
identify what you must find
Strategize
Solve
21
EQUATION OF DENSITY
MASS/ Volume
22
