Identifying Liquids Lab
starstarstarstarstarstarstarstarstarstar
by Eric Cale
| 4 Questions
Note from the author:
This is a inquiry-based density lab where students have to find the correct order of densities of four different liquids (varying concentrations of colored sugar water) through trial and error.

Materials:

Today, you will be identifying 4 different liquids based off of their densities. To do this, you will need the following:
  • Test tubes/Test Tube Rack
  • Pipette
  • Styrofoam Cup
All of the above should be at your lab stations. You will need to get the following from the front of the room:
  • 1 beaker of purple liquid
  • 1 beaker of red liquid
  • 1 beaker of blue liquid
  • 1 beaker of green liquid

Procedure:

You're going to transfer the 4 different liquids into a test tube in different orders to see which is the correct order. In order to do this correctly, you MUST pour the liquid from your pippette VERY SLOWLY into the test tube, otherwise it will mix with your previous layer of liquid. It's also not a bad idea to rinse your pipette out. Use the styrofoam cup with water in it to rinse your pipette out.

Use all 6 test tubes if you need. If you still don't have it "right" by the 6th test tube, empty out your first one and keep going. The correct order would be most dense on bottom and least dense on top. Keep trying until you find the correct order.
1
2
Fill in the following chart based on how you set your liquids in your test tubes. Circle the test tube that was correct.
2
2
Based on what you found the correct answer to be, reorder the following to reflect the order the liquids sit in your test tubes, starting with the liquid that is on top.
  1. Green
  2. Red
  3. Purple
  4. Blue
3
2
Which liquid had the most density?
Purple
Red
Green
Blue
4
2
Which liquid had the least density?
Blue
Green
Red
Purple
Add to my formatives list

Formative uses cookies to allow us to better understand how the site is used. By continuing to use this site, you consent to the Terms of Service and Privacy Policy.