Unit 2 Day 11

1
Unit 2 Day 11
2
Drill

• Copy sentence and fill in the blank
• Distillation is the separation of a mixture by
  the different ____________ _________ of each
  substance.
• A refrigerants boiling point is about _____
  below room temperature.
• When a change in phase takes in energy, it is
  described as ________.
• When a change in phase gives off energy, it is
  described as__________.

Boiling
Points
50C
endothermic
exothermic
3
HW for tomorrow

• Prepare data tables based on todays lecture for
  the soda pop lab.
• These will be graded, turned back to you, and you
  will put them into lab notebooks over the weekend.

4
Distillation Separation by Boiling Points

• What are the ingredients of soda?
• Fizzy-ness comes from gas dissolved in the soda
  CO2 or carbon dioxide
• Soda rots your teeth from all the sugar (well
  say thats solid for now) dissolved in the water
• Soda is mostly water (liquid) with solids and
  gases dissolved

5
Phase diagram for water