How to Grow Crystals

Grade 4 Science Experiment 5 - "How to Grow Crystals"

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Purpose:

The purpose of this science fair project is to grow beautiful crystals through chemistry. Crystals are solids that have formed in an orderly pattern known as crystallinity. You can create your own crystals by heating water with potash alum. The water absorbs the potash alum which then forms crystals. These crystals can have different shapes such as cubic, hexagonal, tetragonal and many other geometric shapes.

Note: You will need adult supervision for this science fair project.

Hypothesis:

Supersaturating Rochelle salt causes the atoms of the mixture to form orderly patterns know as crystals.

Variables:

Time
Amount of Rochelle saltRemember to take a picture each time before you shake the jar. This will allow you to visually record the growth of your crystals.

Materials Needed:

Hot plate
Pot holder
Scale (grams)
Thermometer
Spoon
Tweezers
Small drinking glass
Medium size clean mayonnaise jars with tight lids
Distilled water
Potassium sodium tartrate (Rochelle Salt)
Pencil
Paper
Camera

Buy The Complete "How To Grow Crystals" Project for Only $5.00: