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Find out more about crystals and the answers to trivia questions sent with the kids science project on crystals.

Trivia Questions
How to Grow Crystals
What are Crystals
Crystals in Use Today
Vibrating Crystals
What are atoms and how do they connect together

Trivia Questions

1.  What crystals can be found in the kitchen?

2.  What is the hardest known crystal?

3.  What elements make up Ammonium Monobasic Phosphate - (NH4)H2PO4?

Find the answers to these kids science questions.


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Kids Science Library

Amazing Polymers  
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Or check the Free Activity Library for kids crafts and children's activities.

Science Experiments for Kids: 101 Science Projects Science doesn't have to be complicated, expensive or use specialized laboratory equipment. There are great science projects that can be performed using common household items.

Whether you are a parent or a student trying to find an idea for a science project, a teacher looking for ideas for the classroom, or a science enthusiast who enjoys the delight of experimentation, you'll find what you're looking for in this book.

101 Easy Science Projects



If you have kids, you NEED the Wheel!

Hang the Wheel of Better Behavior on your kitchen wall, and the atmosphere in your home will change overnight. It's guaranteed! Watch the dramatic changes as homework gets done, clothes get picked up, arguing short, the Wheel produces great kids and a stress free environment! The mere presence of the Wheel will have a marked effect on your kids. Chances are, you'll seldom even have to spin it!

Get the Wheel!


Splendid Stones Video

Explore the allure of Earth's precious gemstones in this fantastic National Geographic video.

Splendid Stones Video

Just what are crystals anyway?

A crystal is an organized grouping of atoms, or molecules. Each crystal has different properties and shapes. For example, sugar crystals are oblong and slanted at the ends; salt crystals are cubic. Some elements can make more that one crystalline form. Carbon, as graphite, will conduct electricity, act as a lubricant between moving parts, be used as a writing tool (a pencil) and strengthen of steel. As diamond, carbon is used as an industrial cutting tool and as a gemstone in jewelry.


Crystals in Use Today

Crystals can be used in many ways. Diamonds, rubies, sapphires, and emeralds have been the showiest use of crystals for thousands of years. They were highly valued due to their beauty and relative small amounts that exist in nature. In recent years chemists have been working on methods of creating some of these crystals in the laboratory with a lot of success.


Vibrating Crystals

Each different crystal vibrates at a specific frequency when an electric current is passed through it. The original radios were created using vibrating crystals to create the frequency to transmit signals. As radio technology improved, radio transmitters had several different crystals to allow transmission on different frequencies. Modern radios have large number of different frequencies used by radio stations.

Vibrating crystals can be used for time keeping. A quartz clock uses the vibration of a quartz crystal to measure time. When the crystal has an electric current passed through it, the crystal will vibrate at 60 hertz (60 times per second).

Check the Interesting Websites for more information on science of crystals listed on our webpage on the How Atoms Bond Together.


How to Grow Crystals

Sugar Crystals (water, sugar, string, pencil, container)
  • Boil about 1 cup (400 ml) water.
  • Add about cup (200 ml) of sugar to the water, and stir the solution well. 
  • Pour the solution into the jar. Make sure that the jar you selected can withstand the temperature (a glass should work). 
  • Suspend the string from a pencil. 
  • Submerge the string in the solution. 

The sugar crystals will grow slowly on the string over a period of several days.  If you want the string to hang straight in the jar, tie a weight to the bottom of the string.

Salt Crystals (water, sugar, string, pencil, container)
  • Boil about 1 cup (250 ml) water.
  • Add 1/4 cup salt.
  • The solution will be supersaturated when salt crystals begin to collect on the bottom of the pan. 

Two options for growing salt crystals:

  • Soak a piece of cardboard in the solution until it is saturated and sinks to the bottom of the pan. The cardboard will act as a template or base for crystal growth. Put the pan in a sunny location. Crystals will form as the water evaporates.
  • Simply place the pan of solution in a warm location, and allow crystals to grow without a template. Both methods work. The salt crystal will grow over several days.

Try several pans, and study how the growth of crystals varies between them.



Trivia Answers

1.  What crystals can be found in the kitchen?

Salt, Sugar

2.  What is the hardest known crystal?


3.  What elements make up Ammonium Monobasic Phosphate  - (NH4)H2PO4?

(Nitrogen & Hydrogen4), Hydrogen2, Phosphorus, Oxygen4



Crystal Growing Geodes (Special Deal)

Crystal Growing Geodes (Special Deal)

Grow your own collection of crystals in 3 different sparkling colors.

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