Ch.2: Measurement and Problem Solving Flashcards

(22 cards)

1
Q

2 rules to express a number in scientific notation:

A
  1. move the decimal point to obtain a number between 1-10

2. Positive- right Negative- left

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2
Q

6 rules to determine the number of significant figures in a number

A
  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
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3
Q

The most convenient system for science measurement is based on the metric system and is called

A

International System SI

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4
Q

the base unit of length

A

meter

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5
Q

the base unit of mass

A

kilogram

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6
Q

the base unit of time

A

seconds

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7
Q

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

A

mass

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8
Q

List: kilo
SYMBOL
MEANING
MULTIPLIER

A

K
thousand
10^3

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9
Q

Hecto:
SYMBOL
MEANING
MULTIPLIER

A

h
hundred
10^2

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10
Q

Deca:
SYMBOL
MEANING
MULTIPLIER

A

da
ten
10

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11
Q

Deci:
SYMBOL
MEANING
MULTIPLIER

A

d
tenth
10^-1

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12
Q

Centi
SYMBOL
MEANING
MULTIPLIER

A

c
hundreth
10^-2

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13
Q

milli
SYMBOL
MEANING
MULTIPLIER

A

m
Thousandth
10^-3

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14
Q

micro
SYMBOL
MEANING
MULTIPLIER

A

u
Millionth
10^-6

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15
Q

nano
SYMBOL
MEANING
MULTIPLIER

A

n
billionth
10^-9

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16
Q

Conversion Equivalents: inches=centimeters

1 inch=

A

2.54 centimeters

17
Q

Conversion Equivalents: quart=pints

1 quart=

18
Q

Conversion Equivalents: Quart=mL

1 quart=

19
Q

Conversion Equivalents: Pounds to Kg

1 kg

20
Q

4 step Problem-Solving Strategy

A

identify the given information
identify what you must find
Strategize
Solve

21
Q

EQUATION OF DENSITY

22
Q

Density of water