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What are the two minerals that you can scratch with a fingernail?
Talc and gypsum are two minerals that can be scratched with a fingernail due to their low hardness on the Mohs scale.
A human fingernail has a hardness of approximately 2.5 Which two minerals are softer than a human fingernail?
Talc and gypsum are two minerals that are softer than a human fingernail. Talc has a hardness of 1 on the Mohs scale, while gypsum has a hardness of 2.
Which two minerals are softer than a human fingernail?
Talc and gypsum are two minerals that are softer than a human fingernail, which has a hardness of about 2.5 on the Mohs scale. Talc has a hardness of 1, while gypsum has a hardness of 2.
What are 2 minerals that can be scratched by a fingernail?
Quartz (Mohs 7.0) and diamond (Mohs 10,0) are two of many minerals that are harder than copper (Mohs 2.5-3.0).
What mineral has the lowest hardness on the Mohs hardness scale?
Talc is the softest mineral and classified as 1 on the Mohs hardness scale.The Mohs scale minerals from softest to hardest:1. Talc (softest)2. Gypsum3. Calcite4. Fluorite5. Apatite6. Feldspar7. Quartz8. Topaz9. Corundum10. Diamond (hardest)
What are two tests scientists use to identify minerals?
hardness and streak
What if you had two white samples of talc and gypsum how could you tell them apart?
Gypsum is soluble in water - Talc isn't
What are the two minerals that you can scratch with a fingernail?
Talc and gypsum are two minerals that can be scratched with a fingernail due to their low hardness on the Mohs scale.
Two gram negative bacilli that produce swarming colonies What biochemical tests would you use to identify the bacilli?
Given that the two species of swarming gram negative bacilli are Proteus vulgaris and Proteus mirabilis, one must find the tests that differentiate these two organisms. Referencing the Textbook of Diagnostic Microbiology by Mahon, Lehman, and Manuselis, I've found the two major differences are their reactions to citrate and sucrose.One can use automation or strip testing to discover the organisms reactions to these substances.
What two groups of bacteria are you trying to identify when doing a mannitol galatinase and lipase tests?
Pathogenic and non-pathogenic Staphylococcus species.
Two examples of minerals that break unevenly are talc and?
calcium
What two minerals are softer than apatite?
Talc and Gypsym
A human fingernail has a hardness of approximately 2.5 Which two minerals are softer than a human fingernail?
Talc and gypsum are two minerals that are softer than a human fingernail. Talc has a hardness of 1 on the Mohs scale, while gypsum has a hardness of 2.
what is forensic drug testing?
Forensic drug testing is to identify unknown powders, liquids and pills that may be illicit drugs. There are basically two categories of forensic tests used to analyze drugs and other unknown substances. They are Presumptive tests and Confirmatory tests.
What are two ways you can identify a physical property?
You can identify a physical property by observing and measuring characteristics such as color, shape, size, or density. Another way is to perform various tests or experiments to determine properties like melting point, boiling point, or conductivity.
Which two minerals are softer than a human fingernail?
Talc and gypsum are two minerals that are softer than a human fingernail, which has a hardness of about 2.5 on the Mohs scale. Talc has a hardness of 1, while gypsum has a hardness of 2.
How could you identify two unknown white crystals such as salt and sugar?
If you can isolate the compound individually first, that's the best thing. Further to this, anion and cation tests will tell you what kind of salt it is. There are also tests to determine simple sugars.
