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Chromatography of Kool-Aid
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CC BY-NC-SA
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Using filter paper, students separate the dyes in Kool-Aid and food coloring and identify how many different compounds are used for the different colors. Students describe this process in terms of attraction of the molecules for water and paper.

Subject:
Chemistry
Science
Material Type:
Activity/Lab
Date Added:
08/28/2020
Electrical Fleas
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity about electricity, learners explore how static electricity can make electric "fleas" jump up and down. Learners use a piece of wool cloth or fur to charge a sheet of acrylic plastic. Then, they observe as tiny bits of Styrofoam, spices, ceiling glitter, or rice (aka "fleas") jump up to the plastic and then back down.

Subject:
Physics
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Date Added:
12/10/2020
Hand Battery
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity about chemistry and electricity, learners form a battery by placing their hands onto plates of different metals. Learners detect the current by reading a DC microammeter attached to the metal plates. Learners experiment with different metals to find out what combination produces the most current as well as testing what happens when they press harder on the plates or wet their hands. Learners also investigate what happens when they wire the plates to a voltmeter.

Subject:
Chemistry
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Date Added:
12/10/2020
Magnetic Pendulums
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CC BY-NC-SA
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In this activity and demonstration about electricity and magnetism, learners observe how the current generated when one copper coil swings through a magnetic field starts a second coil swinging. Learners also explore what happens when they change the polarity of the magnet, reverse the coil, or add a clip lead to short-circuit the coils. Use this activity to illustrate how electricity and magnetism interact. The assembly of the electromagnetic swing device takes about an hour.

Subject:
Physics
Science
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Date Added:
12/10/2020
Pouring Water on a String
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this open-ended activity (magic trick), students look at attraction between molecules as they pour water along a strong from one cup to another cup. Students develop an explanation for how the process works.

Subject:
Chemistry
Science
Material Type:
Activity/Lab
Date Added:
08/28/2020