Hardness of Materials | The Scratch Test | Science Experiment

Objects around us are made up of different materials. Different materials may have similar or different properties.
One property of materials is hardness. Hardness of materials is defined as the ability to resist abrasion or scratches.
This video shows a simple experiment about hardness of materials.

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Credits:
References:

https://www.corrosionpedia.com/defini...
https://www.rapiddirect.com/blog/hard...


Mohs Hardness Scale
https://www.nps.gov/articles/mohs-har...