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Chemistry: Thickness of Aluminum Foil

Chemistry: Thickness of Aluminum Foil. September 5, 2012. Drill. How do you determine the thickness/height of something very thin, like aluminum foil? /5 What materials would you use to solve this problem? /5 Materials Needed: Pen, Paper, and Calculator /5. Objective.

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Chemistry: Thickness of Aluminum Foil

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  1. Chemistry: Thickness of Aluminum Foil September 5, 2012

  2. Drill • How do you determine the thickness/height of something very thin, like aluminum foil? /5 • What materials would you use to solve this problem? /5 Materials Needed: Pen, Paper, and Calculator /5

  3. Objective Students will be able to select appropriate instruments and materials in order to determine the thickness of aluminum foil.

  4. Overview: What are we doing today? • Calculating the thickness of aluminum foil. • To do that we have to learn a couple formulas. • You should know how to measure the area of the foil, but we just need the third dimension (height/thickness).

  5. Before you can begin, how do you do a lab? Prelab— (Write the answer) 1. What is the area of a rectangular piece of oak whose length and width are 3.20 cm and 2.25 cm respectively?

  6. Mass and density 2. If that piece of oak has a mass of 30.0 g and a density of 0.710 g/cm3, what is its volume?

  7. Thickness of the piece of oak • What formula do we use to calculate the thickness of the piece of oak? 4. What makes this formula reliable? (What is reliable?)

  8. Your task: Materials: • A piece of aluminum foil • A centimeter ruler • A balance • Density of Aluminum Foil: 2.70g/cm3 You will determine the thickness of a piece of aluminum foil.

  9. Write your lab • Write a hypothesis • List materials • Create a procedure • Include a data table • Write a conclusion. Five or more sentences.

  10. What is Volume? Volume: the amount of space matter takes up. How do you calculate it? V=L x W x H

  11. How can I rewrite the formula? You can rewrite the previous formula (V=LxWxH) Substitute T (thickness) for H (height). V=L x W x T

  12. What’s the formula for Area? Area: A=LxW Can you substitute area (A) in the volume formula (V=LxWxH)? V=A x T If we are looking for thickness (T) how can we rearrange the formula? T=V/A

  13. What’s another way to determine volume? We can use the density formula: Density=mass/volume D=m/V

  14. Let’s rearrange If you have D=m/V Rewrite for V: V=m/d

  15. A1 Groups • Lab Stations Station 1 Jimmy Nina Amanda Asia Station 2 Aderopo Nick Station 3 Jessica Austin Cody Patty Station 4 Greg Deshane Christine Ryan Station 5 Takiel Jawuan Isiah Raphael Station 6 Deja Joie Autumn Nakia

  16. Analysis • What is the thickness of Aluminum foil? • Was you hypothesis correct or incorrect? Why or why not? • How does your data compare to other groups?

  17. Extension • Percent error

  18. Exit Ticket • How do you determine the thickness of an object if you are only given a balance, the density, and a ruler? • Why did we do this lab? • What did you learn?

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