Science project
The Scratch Test: Testing a Rock's Hardness
Minerals have many different properties. These properties are used to classify minerals and to help in knowing how minerals can be used. Some of the properties of minerals include hardness, color, shine, and breaking. There are different tests that can be used to determine minerals’ properties. One of those tests is a scratch test. This test is used to determine the hardness of a mineral and can be performed by simply using a nail to scratch the surface of a mineral.
Problem:
In this experiment, students will investigate the hardness property of minerals.
Materials:
- Rock salt
- Quartz
- Nail
- Other easily accessible minerals
Procedure:
- Observe the two minerals closely. Write down your observations of how they feel and look. You may even want to draw an illustration of the two minerals.
- Using the pointed end of the nail, carefully try to scratch the surface of the quartz. Record what happened. Did the nail scratch the quartz?
- Now try to scratch the rock salt with the nail. Record what happened. Did the nail scratch the rock salt?
- If you have other minerals, repeat this test on each of the minerals. Record all of your observations in chart.
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Education.com provides the Science Fair Project Ideas for informational purposes only. Education.com does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against Education.com that arise thereof. In addition, your access to Education.com's website and Science Fair Project Ideas is covered by Education.com's Privacy Policy and site Terms of Use, which include limitations on Education.com's liability.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.
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