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TemperatureMeasure of heat or how fast molecules are
moving
Faster molecular motion = more heat
Slower molecular motion = less heat
No such thing as cold, just lack of molecular motionTherefore – NO
HEAT!!!
ThermometersFahrenheit
Mainly used in the U.S. & Belize (Burma too!)
Based on ice, water, and salt (a brine) = 0 degrees
Freezing or melting of H2O = 32 degrees
Under the armpit of his wife = 96 degrees
180 degrees from water freezing to water boiling (212 )
o
ThermometersCelsius
Most widely used around the worldBased on behaviors of water
Water freezes at 0 Water boils at 100 Exactly 100 between 0 and 100
oo
o o
ThermometersKelvin
Favorite of scientistsAbsolute Zero
Such a lack of heat, that molecules actually STOP moving!!!
This doesn’t actually exist Deep Space just above 0 K (Big Bang!!!)
Exactly 273 added to the Celsius scale
Converting from Fahrenheit to Celsius
[°F] = [°C] × 9⁄5 + 32
Remember 180 F between boiling and melting and 100 C between boiling and melting
180/100 = ???
°°
Extra Credit ChanceThe Fahrenheit and Celsius scales have
exactly one point where the numbers of the scale overlap
(i.e. X degrees F = X degrees C)Either show me:
The math to prove where these two scales overlap, or
Find a reputable website (not Wikipedia) which tells you this data point. I will need a full citation for this
Baldwin, P. 2010. APIRA-chem. Accessed 12 September, 2010 at http://aspira-chem.wikispaces.com/.
Conversion Graphs
10 20 30 40 50 60 70Temperature (oC)
0
20
40
60
80
100
120
160
180
Tem
pera
ture
(o F
)
80 90 100
140
200
220
Use the conversion graph to convert
(a)76o C to oF
(b) 100oF to oC
Remember:
0oC = 32o F
100oC = 212o F
oC 0 60 100oF 32 140 212
Use the conversion table to draw a conversion graph between oC and oF.
Conversion Graphs
10 20 30 40 50 60 70Temperature (oC)
0
20
40
60
80
100
120
160
180
Tem
pera
ture
(o F
)
80 90 100
140
200
220
Use the conversion graph to convert
(a)76o C to oF
(b) 100oF to oC
Remember:
0oC = 32o F
100oC = 212o F
168oF
38oC
oC 0 60 100oF 32 140 212
Use the conversion table to draw a conversion graph between oC and oF.