1. Phase Change and Temperature
October 29, 2015

2. Bell Work
Explain the diagram to the left. Be sure to include information about the molecules in the various phases and how they react during the change.

3. Learning Targets
Students will be able to convert temperatures between Celsius and Fahrenheit.

4. Fahrenheit and Celsius
Fahrenheit is the what people in the United States understand best.
Freezing is 32 degrees
Boiling is 212 degrees
Celsius is the metric measurement of temperature and used by scientists
Freezing is 0 degrees
Boiling is 100 degrees

5. Formulas to convers
Formula
°C  x  9/ = °F
(°F  -  32)  x  5/9 = °C

6. Convert Celsius into Fahrenheit
5) 50 oC = ______________ oF
6) 75 oC = ______________ oF
7) 80 oC = ______________ oF
8) 45 oC = ______________ oF
Convert Fahrenheit into Celsius
9) 203 oF = ______________ oC
10) 86 oF = ______________ oC
11) 149 oF = ______________ oC
12) 158 oF = ______________ oC

7. Answers
5) 50 oC = 122 oF 6) 75 oC = 167 oF 7) 80 oC = 176 oF 8) 45 oC = 113 oF
9) 203 oF = 95 oC 10) 86 oF = 30 oC 11) 149 oF = 65 oC 12) 158 oF = 70 oC

8. Designed to show absolute zero
KELVIN
Designed to show absolute zero
Absolute zero is the temperature where all molecular motion stop.
When you give a temperature in Kelvin you do not use the words degrees and to abbreviate you use only the letter K.
To convert to Kelvin you must first have your temperature in Celsius then add 273.