Chem 105a SI Units, Measurements and fun

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21 Terms

1
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extensive

mass dependent

2
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intensive

mass independent

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length

meters (m)

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mass

kilogram (kg)

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time

seconds (s)

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temperature

kalvin (K)

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amount of substance

moles (mol, 6.022 × 10²³

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TK =

TC + 273.15

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TC =

TK - 273.15

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why do we use kalvin

because its nearly impossible to reach 0 K (absolute 0) which makes calculations much easier as temperature may be in the denominator.

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tera

T, 10^12

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giga

G, 10^9

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mega

M, 10^6

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kilo

k, 10³

15
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deci

d, 10^-1

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centi

c, 10^-2

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milli

m, 10^-3

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micro

μ, 10^-6

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nano

n, 10^-9

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pico

p, 10^-12

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femto

f, 10^-15