BELL WORK:

• These eggs (cells) were left overnight in different solutions. Which egg was left in the hypertonic/ hypotonic/isotonic solution? How do you know?

Science Fact of the Day:The little Alaskan Wood Frog is capable of

reviving itself back to normal life after staying completely frozen for months, during which its heart, brain, and other organs stop functioning.

CO: I will understand how polymers are made.

LO: I will write notes and complete a lab.

KWL

• Fill in the section “Know” with what you know about monomers and polymers.

• DON’T look at your homework notes.

Monomer• Mono = one• Monomers are small units that can be

combined to make larger units.– Subunits of polymers

Polymers

• poly= many• Polymer= a large molecule made by bonding

smaller molecular units (monomers) together• Monomer + monomer + monomer +…= polymer

What is the monomer in the above polymers pictured?

Examples of biological polymers include:

• Proteins, Complex Carbohydrates, Lipids, Nucleic Acids (DNA)

Dehydration synthesis = a process through which polymers are formed from monomers through the removal of H2O.

Hydro=water Lysis=cut

Hydrolysis = the process of breaking down polymers into monomers by the addition of H2O.

Hint: Think Red Rover!

Making/breaking polymers is part of metabolism.

Today’s Activity:The “Gloop” Lab

If you did NOT do your homework last night, you will be watching the “Polymer Party” video and taking notes INSTEAD of participating in the Gloop Lab.

Watch your video next time!

Directions for making “gloop”:1. Pour the small cup of glue into your plastic

baggie…no, not every drop will go in.2. Add 2-4 drops of food coloring to the glue,

close the bag tightly, and knead together with your hands.

3. Add 7mL of water to the baggie using the marked graduated cylinder, close the bag tightly, and mix thoroughly.

4. Add 1 spoonful of borax to the baggie (the powder in your pink cup), close the bag tightly, and mix thoroughly.

In this lab…

The glue contains a polymer called polyvinyl acetate resin. We changed the polymer’s behaviors twice in this activity: once when

we added water and the second time when we added borax.

Gloop Lab Report:

On the back of today’s notes page, answer the following questions:

1. When we added water, what process was occurring: dehydration synthesis or hydrolysis? Describe the glue after water was added.

2. When we added borax, what process was occurring: dehydration synthesis or hydrolysis? Describe the glue after borax was added.

3. Summarize what happened during the Gloop Lab in 30 words. You must use the words: polymer, hydrolysis, dehydration synthesis

KWL

• Summarize what you’ve learned in 30 words. Include the words: monomer, polymer, synthesis, water