Chemistry
Lecture 3A Scientific Math
Name ___________________________________
8-18-14
Over the next few lessons you will learn some basic math essential to studying chemistry:
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I CAN
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TEMPERATURE vs HEAT
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What is __________________ and how is it different from _______?
Temperature and Heat are ________ the same thing.
How are they different? Remember ______________________?
_____________ is a measure of the ____________________ possessed by a substance.
___________________ is a measure of the ______________ possessed by the particle of a
substance.
EXAMPLE
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Two beakers of water are placed on a hot plate and heated until both reach the boiling
point of water, 100 oC.
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What is the ______________of each beaker?
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Which beaker of water has _________________________?
The ___________________________________________.
TEMPERATURE SCALES
FAHRENHEIT SCALE
Since the invention of the first modern thermometer in 1724, scientists have created a number of
temperature scales.
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Since the invention of the first modern thermometer in 1724, scientists have created a number of
temperature scales.
A common widely used scale is the ________________________ scale.
Freezing Point (water) ___________.
Boiling Point (water) ____________.
_____________________________________________ between FP and BP.
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Temperatures can be __________________________________________.
CELSIUS TEMPERATURE SCALE
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The Celsius Scale is the preferred scale for most scientific work.
Part of the __________________________________________.
Freezing Point is ________________.
Boiling Point is _________________.
___________________________________________________ between FP and BP.
Temperatures can be _________________________________________________.
For ____________ science work the __________________________ is fine. However, in
some calculation, temperatures _______________________________ present a problem.
Example Volume/Mass calculations cannot use temperatures less than zero because
volume or masses _________________________________.
In these instances, a third scale is used.
KELVIN TEMPERATURE SCALE
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The ____________________ is based on the ___________ and ____________________________.
For ___________________________ (+ or -) Kelvin, matter expands or contracts
by________________ of its original volume.
If matter’s temperature could be lowered to __________________, matter would have a
_______________________, which is THEORETICALLY impossible.
This temperature is known as _____________________________________.
At this temperature matter would possess ______________________________________!
Scientist have come within a few millionths of a degree of absolute zero!
TEMPERATURE CALCULATIONS/CONVERSION BETWEEN SCALES
Often in scientific work, it is necessary to convert temperatures from one system to another. This
is easily done with the appropriate equation.
CONVERTING A FAHRENHEIT TEMPERATURE TO CELSIUS
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To convert a temperature given in oF to Celsius, use this equation:
CONVERTING A CELSIUS TEMPERATURE TO FAHRENHEIT
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To convert a temperature in oC to Fahrenheit, use this equation:
CONVERTING CELSIUS TO KELVIN or KELVIN TO CELSIUS
(Generally just 273 is fine!)
CONVERTING FAHRENHEIT TO KELVIN
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To convert Fahrenheit to Kelvin:
[COMPLETE PRACTICE PROBLEMS]