Date post: | 29-Dec-2015 |
Category: |
Documents |
Upload: | mary-robertson |
View: | 213 times |
Download: | 0 times |
Do Now
• Do now• Lab purpose discussion• Procedure for Part 1• Post-lab questions 1, 2, & 3
Agenda
• Write two sentences describing the purpose of this lab.
Learning Objectives: SWBAT• Make observations about reactions of sodium
alginate• Explain observed color changes based on pH
New cancer treatments can use nanoparticles with encapsulated drugs.
• Why are targeted cancer treatments desirable?
• What are some ways to create targeted treatments?
Encapsulation in Sodium Alginate
• Why do spheres form when we add a solution containing sodium alginate to a solution of calcium chloride?
• Are these nanoparticles?
What are we encapsulating in sodium alginate?
Part 1• Congo red• Bromophenol bluePart 2• Iodine-potassium iodide• Starch
Acid-Base Indicators
• What are acid/base indicators used for?
Acid-Base Indicator
Lower pH Color
pH Range of Color Change
Higher pH Color
Congo red Blue 3.0 – 5.0 Red
Bromophenol blue
Yellow 3.0 – 4.6 Purple
• Do now• Lab purpose discussion• Procedure for Part 1• Post-lab questions 1, 2, & 3
Agenda
Learning Objectives: SWBAT• Make observations about reactions of sodium
alginate• Explain observed color changes based on pH
Do Now
• Do now• Procedure for Part 2• Finish post-lab questions• Discussion
Agenda
• Write two things you learned yesterday and two questions you have
Learning Objectives: SWBAT• Explain observed color changes based on the
reaction of starch and iodine and diffusion properties
• Relate encapsulation of materials in sodium alginate spheres to current scientific research