Growing Crystals

Suggested Grades

3+

Objective

Students will get an introduction to the cause and effect of a chemical reaction between water, mucilege glue, and magnesium sulfate through forming crystals.

Materials

• 1 glass slide
• 1 test tube
• 1 dropper
• 1 bottle of mucilege glue
• magnesium sulfate

Method

• Put 3 ml of water into the test tube
• Add enough magnesium sulfate to make saturated solution
• Add a drop of glue, and stir until the glue is dissolved
• Using the dropper, put enough of the solution on the glass slide to cover it completely
• wait a few minutes and the child will see the crystals start to form.
• Let dry.
• What happened? How does it look like, draw it? Why did this happen?