Science project

Demonstrating the Separation of Mixtures

(21 ratings)

by Danielle Abadam

High School Science Science projects: Demonstrating the Separation of Mixtures

Grade Level: 7th to 10th; Type: Chemistry

Objective:

In this experiment, you will separate large-scale substances to understand how mixtures are made and the variance in the physical properties of their ingredients.

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Grade

Middle School High School

Subject

Science

Research Questions:

Why does the density of the water change when salt is added?
If paper was added to the experiment, how would you change the experiment to separate the paper from the plastics and metal?
If glass was added, how would you change the experiment?
Is this experiment a good representation of your recycling bin at home?

Materials:

Container
Small pieces of heavy plastic jugs
Small pieces of light plastic bottles
Small pieces of aluminum cans
Magnet
Net
Salt
Water

Experimental Procedure

In the container, combine the pieces of plastic and metal.
Use the magnet to separate and pull out the metal materials. Set them aside.
Fill the container with water.
Gradually add salt to the water until one set of plastic pieces begins to float.
Use the net to retrieve the floating pieces. Set them aside.
Use the net to remove the remaining pieces. Set them aside.

Terms/Concepts: Solubility, Magnetic Properties, Mass

References:

Solubility: http://www.solubilityofthings.com/

Magnetic Properties: http://www.ndt-ed.org/EducationResources/HighSchool/Magnetism/magneticproperties.htm

Author: Danielle Abadam

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