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If a material has a hardness of 8 can it not be scratched by a material with a hardness of 7?
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∙ 10y ago
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∙ 10y ago
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What minerals have a hardness of 7 on the mohs scale?
Topaz is a common mineral with a hardness of 8 on the Moh's hardness scale. This means it can scratch glass and cannot be scratched with a knife blade or masonry (steel) nail.
What is the hardness of pyroxene?
Phyllite has a density of between 2.18 and 3.3, dry.
What is The hardness or sugar?
between 7 and 8
What mineral can scratch glass and be scratched by topaz?
Any mineral with a Mohs hardness of 7 or greater could scratch quartz. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10).
What kind of mineral can scratch quartz but not diamond?
According to the Mohs scale of hardness, Diamond has a hardness of 10 and Quartz has a hardness of 7. Any mineral with a hardness greater than 7 can scratch quartz and diamond can scratch any mineral with a hardness less than 10. Corundum (hardness of 9) and Topaz (hardness of 8) are two examples of minerals that can scratch quartz but not diamond.
What minerals have a hardness of 7 on the mohs scale?
Topaz is a common mineral with a hardness of 8 on the Moh's hardness scale. This means it can scratch glass and cannot be scratched with a knife blade or masonry (steel) nail.
A substance with a hardness of 8 will scratch a substance with a hardness of 7?
Yes, since 8 is stronger than 7.
What is the hardness of pyroxene?
Phyllite has a density of between 2.18 and 3.3, dry.
What is The hardness or sugar?
between 7 and 8
What is sugar hardness level?
between 7 and 8
How hard is the aquamarine birthstone on the MOHs scale of hardness?
Aquamarine is between 7(Quartz) and 8(Topaz) on MOHs scale of hardness. But, Aquamarine is closer to 8(Topaz) than 7(Quartz). :-)
What mineral can scratch glass and be scratched by topaz?
Any mineral with a Mohs hardness of 7 or greater could scratch quartz. Examples would be quartz (7), topaz (Mohs 8), corundum (9), and diamond (10).
What kind of mineral can scratch quartz but not diamond?
According to the Mohs scale of hardness, Diamond has a hardness of 10 and Quartz has a hardness of 7. Any mineral with a hardness greater than 7 can scratch quartz and diamond can scratch any mineral with a hardness less than 10. Corundum (hardness of 9) and Topaz (hardness of 8) are two examples of minerals that can scratch quartz but not diamond.
What is the approximate hardness of topaz?
the hardness of Topaz is 8 on moes hardness scale
How do you determine if a water sample is hard or soft?
The Mohs scale of hardness arranges ten common minerals order of increasing hardness and each is assigned a number: 1, talc; 2, gypsum; 3, calcite; 4, fluorite; 5, apatite; 6, orthoclase (feldspar); 7, quartz; 8, topaz; 9, corundum; and 10, diamond. Hardness of minerals is defined as the resistance of the smooth surface of a mineral to scratching. A soft surface is scratched more easily than a hard surface; so a hard mineral, such as diamond, will scratch a soft mineral, such as graphite, and the hard mineral will not be scratched by the soft. Hardness of metals is determined by impressing a small ball or cone of a hard material into the surface to be tested and measuring the size of the indentation. Hard metals are indented less than soft metals. This is known as the Brinell test
Why can't non metals be scratched?
It depends on which non metals you mean. The ability to scratch a material depends on its hardness relative to the material you use to scratch it with. With your nails you can scratch materials softer than your nails, like some plastics and minerals. But nothing can scratch in diamond because it's the hardest material there is, but in turn diamond can scratch all other materials, since they're softer that diamond including all metals and non metals. So although most metals are relatively soft, there are many non metals that are softer that some metals. Trivia: the softest metal is mercury with a hardness of 0 (it's liquid at room temperature) The hardest metal is carbon steel with a hardness of around 8 to 9 The softest mineral is talc with a hardness of 1 The hardest mineral is diamond with a hardness of 10 (a form of pure carbon)
What hardness does a mineral have if its scratched by glass?
Somewhere between 3 and 5 on the Mohs scale of relative mineral hardness...
