Day 1. 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.

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Presentation transcript:

Day 1

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

Quick Review What is nanotechnology? What are some potential uses for nanotechnology?

New cancer treatments can use nanoparticles with encapsulated drugs. Why are targeted cancer treatments desirable? What are some ways to create targeted treatments?

Sodium Alginate

We have all eaten sodium alginate!

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 blue Part 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 redBlue3.0 – 5.0Red Bromophenol blue Yellow3.0 – 4.6Purple

Part 1

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

Day 2

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

What happens when starch mixes with iodine? Apple Potato

Part 2

Agenda Learning Objectives: SWBAT Explain observed color changes based on the reaction of starch and iodine Relate encapsulation of chemicals in sodium alginate spheres to current scientific research Do now Procedure for Part 2 Finish post-lab questions Discussion