And another question: why chalk, marble white and the crust CaCO3 to Ca (OH) 2 grayish? Marble and

Hello, Please help to deal with the two substances: calcium carbonate - CaCO3 and calcium hydroxide Ca (OH) 2 The situation is this: 1. Ca (OH) 2 on the surface in the open air in the form of lime putty. 2 Interacting with the carbon dioxide in the air, on top of crust is formed CaCO3. 3 Both substances in dry powder form are insoluble in water. Question: What is the difference between them? Maybe in the chemical properties or lattice? If so, what and how they differ? Follow-up: As far as I izvestnoCaCO3 is the foundation of chalk, marble, etc. But if at least external difference between CaCO3 and Ca (OH) 2 is not observed, it does not mean that the Ca (OH) 2 can be equated to a chalk and marble? Thanks nitrate in advance for your answers, Thanks
Hello, Please help to deal with the two substances: calcium carbonate - CaCO3 and calcium hydroxide Ca (OH) 2 The situation is this: 1. Ca (OH) 2 on the surface in the open air in the form of lime putty. 2 Interacting with the carbon dioxide in the air, on top of crust is formed CaCO3. 3 Both substances in dry powder form are insoluble in water. Question: What is the difference between them? Maybe in the chemical properties or lattice? If so, what and how they differ? Follow-up: As far as I izvestnoCaCO3 is the foundation of chalk, marble, etc. But if at least external difference between CaCO3 and Ca (OH) 2 is not observed, it does not mean that the Ca (OH) 2 can be equated to a chalk and marble? Thanks in advance for responses Thanks Ca (OH) 2 - strong base, alkali hydroxide, nitrate calcium solubility 1.6 g / l CaCO3 - salt of carbonic nitrate acid, calcium carbonate, the solubility of 6 mg / l, i.e. differs from the solubility nitrate of lime in more than 2 orders of magnitude. Chemical properties of these two materials are quite different and they can not be equated.
Judging by the description, it is about a construction site. Ca (OH) 2 is the binder in mortars - this is one of its most important properties. CaCO 3 does not have astringent nitrate properties, so it can only be used as a filler, for example, an adhesive underlayer.
Thank you very much for your answers, please Can you recommend another some books where I can learn more about these substances and their properties. Just information on the internet it seems to me is not enough, but just in books on chemistry as a general ever written. And another question: why chalk, marble white and the crust CaCO3 to Ca (OH) 2 grayish? Thanks again for your answers, you helped me a lot
And another question: why chalk, marble white and the crust CaCO3 to Ca (OH) 2 grayish? Marble and chalk not always past, their color is often dependent on the impurities. 1 Miscellaneous crystalline state affects the color. 2 color depends on the impurities. http://www.xumuk.ru/...pedia/1828.html http://www.xumuk.ru/...pedia/1594.html
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