How Hard Are Various Types of Rocks and Minerals?
Some minerals are so soft that they are being used as baby powder and an additive for creams and cosmetics. Some others are so hard that they are being used as abrasives in making sandpapers and grinding wheels. Hardness is one of the important physical properties of minerals and it is sometimes used as a way to identify minerals.
Material and instructions
Conduct research and run experiments concerning the hardness of minerals that you can find. Collect some minerals, test their hardness and try to use the hardness as a factor that helps you to identify that mineral. Your report must explain how the hardness is being tested and describe some of the applications of minerals with certain hardness.
Details of this project
Support or more information on this project is available for the members of You may also find a Science kit for this topic at