Grapes & Soda Lab Station

Observations: (Use words and labeled drawings to describe what happened)

Explanation: (Use words and labeled drawings to explain what happened in terms of particle behavior and intermolecular forces)

Milk Lab Station

Observations: (Use words and labeled drawings to describe what happened)

Explanation: (Use words and labeled drawings to explain what happened in terms of particle behavior and intermolecular forces)

Floating CorkLab Station

Observations: (Use words and labeled drawings to describe what happened)

Explanation: (Use words and labeled drawings to explain what happened in terms of particle behavior and intermolecular forces)

Paper Towel / Plastic Bag Lab Station

  1. Look at the torn edges. How would you describe what they look like?

2.a. What do these new torn edges look like?

  1. How do they compare to the first tear?
  1. Which way was it easiest to rip the paper towel?

d. Draw a picture that shows the way you think the fibers are oriented in your paper towel?

3. a. What did you notice about the torn edges?

  1. How do the two torn edges compare? Are they straight tears? Are the edges smooth?
  1. Which direction was the plastic easiest to rip apart? Was your prediction correct?

4a. Draw a picture that shows the way you think the molecules are oriented in your paper towel?

4b. Use words and labeled drawings to explain your observations of the plastics bag in terms of particle behavior and intermolecular forces.

Penny Station

Use the pipette to “stack” as many drops of water on the penny as possible.

Observations: (Use words and labeled drawings to describe what happened)

Explanation: (Use words and labeled drawings to explain what happened in terms of particle behavior and intermolecular forces)

If you were in a competition to see who could stack the most drops on the penny, list some ways you could cheat to either maximize your number of drops or minimize your opponents. Explain your reasoning.

Alcohol Station

Observations: (Use words and labeled drawings to describe what happened)

Evaporation times:

Methyl alcohol______Ethyl alcohol______Isopropyl alcohol______

Explanation: (Use words and labeled drawings to explain what happened in terms of particle behavior and intermolecular forces)

Would a drop of water evaporate faster or slower than any of the alcohols? Explain your answer.