All STEM Activities

How to Grow the Best Crystals

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Here's how.

Summary

Materials

Instructions

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Active Time

20-30 minutes

Total Project Time

Up to 1 day

Key Concepts

chemistry, solubility, saturation, crystals, purification, crystalization

Translucent crystals form on a red pipe cleaner that is bent into the shape of a heart

Introduction

Have you ever wondered how crystals are made? Crystals come in all different shapes and sizes. However, the purest and cleanest crystals are usually also the ones that grow to be the largest in size. In this activity, you will compare the size and shape of crystals grown at different temperatures. With just water and Borax, a household cleaning product, you can discover the method for growing large, pure crystals!

Credits

Teisha Rowland, PhD, Science Buddies

This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,200 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Next: Materials

Materials

Pipe cleaners (2)
Pencils (2)
Borax, also called 20-Mule Team household cleaner. It can be found in the cleaning aisle of many grocery stores.
Measuring tablespoon
Large bowl
Identical jars or large drinking glasses (2)
Cooking pot
Plastic wrap
Ice cubes
Water

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