Hardness of Solid Substances - Diamond Scratching Glass
A piece of glass is scratched with a diamond-tipped stylus, showing that diamond is harder than glass.
A piece of glass is scratched with a diamond-tipped stylus, showing that diamond is harder than glass.
A silicon wafer is flexed until the wafer shatters.
A piece of tape pressed against a sample of molybdenum sulfide will peel off layers of the sample. Additional tape can be used to cleave the peeled sample hundreds of times.
Lithium, a very soft metal, can be cut with a knife.
Graphite can easily be crushed into small pieces.
Magnesium metal is not easily ground or crushed.
Sulfur can easily be ground to a fine powder.
Iron metal is not easily ground or crushed.
Zinc metal is not easily ground or crushed.
Selenium can easily be ground to a powder.