what other compounds are in chicken eggshells besides calcium carbonate?
402763
The main ingredient in eggshells is calcium carbonate (the same brittle white stuff that chalk, limestone, cave stalactites, sea shells, coral, and pearls are made of). The shell itself is about 95% CaCO3 (which is also the main ingredient in sea shells). The remaining 5% includes calcium phosphate and magnesium carbonate and soluble and insoluble proteins.
966792
Eggs are prone to the same bacteria as other foods.  Refigeration slows that growth, but doesn't stop it.  Also, egg shells are not made of lead.  They are permiable to oders and other things in the refigerator, just as a piece of meat would be.  All of those icky things can seep into an egg shell just as easily as anything else (think about how dying easter eggs also gives the tint of that color to the inside of the egg).
742228
The main constituent of egg white is water at 83%. Ovalbumin is the main protein constitutent and is structurally a serpin (a class of proteins), although it does not have a known function in inhibiting other proteins.\n\nThe major proteins found in egg white (> 1% of the total protein content) are listed below:\n\nOvalbumin 54% \nConalbumin 13% \nOvomucoid 11% \nLysozyme 3.5% \nGlobulins (G2, G3) 8.0% (?) \nOvomucin 1.5% \nOther protein components include, flavoprotein (.8%), ovoglycoprotein (.5%), ovomacroglobulin (.5%), ovoinhibitor (.1%) and avidin (.05%).
751478
c since calcium carbonate  = CaCO3 and they react to produce calcium nitrate(Ca(NO3)2), carbon dioxide(CO2) and water(H2O).
371411
No. \n    Now let us look at the question deeply.\n \n 1)THE SHELL -- When an egg is laid, it has an outer shell of calcium carbonate. This shell will NOT increase or decrease in its weight any time after it is formed till the chick is hatched and even after that.The shell only protects the egg and allows gaseous exchange and plays no other role.\n \n2)THE YOLK & THE ALBUMEN -- This part of the egg contains two important things viz. the fertilized nucleus and the reserve food for the growth of the embryo/chick.\nThe fertilized nucleus is embedded in the yellow yolk and can hardly be seen with the naked eye initially ;but as the embryo begins to grow ,this embryo can be seen with the naked eye with its beating heart and the web of blood vessels (but you have to break open the egg and then it is a waste.)\n \n The raw material for the growth is drawn from the yolk(the yellow of the egg ) and the albumen ( the white of the egg. ), i.e. the reserve food is converted in to embryo and then the chick. There is no loss or gain of weight here.\n\nNow comes the crux of the problem.\n \n3)THE ENERGY OR THE FUEL FOR THE DEVELOPMENT -- The energy required for this development also comes from the SAME reserve food material (Yolk & Albumen).\n This conversion of food in to energy means LOSS in the weight. \n\n Thus, if you weigh a newly laid egg and newly hatched chick with the tattered shell the egg will weigh more. (you can discount the weight of the shell from both the readings).\n \n4)THE CONCLUSION -- The chick does not gain any weight in fact it has less weight than the egg. It begins to gain weight only when it begins to feed on its own.\nThis is applicable for all the birds.
397341
If varies with the breed of the chicken and it's diet.  Free range chicken eggs have a rich deep golden color and the yolk sits higher on the albumen (white). Factory chickens get a diet of cracked corn, vitamins, hormones and antibiotics. YUCK!  Barnyard chickens eat cracked corn, flowers, grass, bugs, worms, etc.
864694
Tin floride\nAmmonium sulfate\nMagnesium hydroxide\nBarium carbonate\nSodium sulfate\nCarbon chloride
290374
Calcium carbonate is a chemical compound, with chemical formula CaCO3.\n\nIt is commonly used as an antacid, and is the active ingredient in agricultural lime. It is a common substance found as rock in all parts of the world and is the main component of seashells and the shell of snails.\nContents\n[hide]\n\n    * 1 Occurrence\n    * 2 Preparation\n    * 3 Chemical properties\n    * 4 Uses\n    * 5 External links\n\n[edit]\n\nOccurrence\n\nCalcium carbonate is found naturally as the following minerals and rocks:\n\n    * Aragonite\n    * Calcite\n    * Chalk\n    * Limestone\n    * Marble\n    * Travertine\n\nEggshells are composed of approximately 95% calcium carbonate.\n\nTo test whether a mineral or rock contains calcium carbonate, strong acids like hydrochloric acid can be dropped with a dropper onto it. If it does contain the chemical, it will fizz and produce carbon dioxide; otherwise, it probably wouldn't react vigorously. For example, all of the rocks/mineral mentioned above will react with acid.\n[edit]\n\nPreparation\n\nThe vast majority of calcium carbonate used in industry is extracted by mining or quarrying. When pure calcium carbonate is required (e.g. for food or pharmaceutical use), it is prepared by passing carbon dioxide into a solution of calcium hydroxide: the calcium carbonate precipitates out, and this grade of product is referred to as precipitated.\n\n    Ca(OH)2 + CO2 → CaCO3 + H2O\n\n[edit]\n\nChemical properties\n\n    See also: Carbonate\n\nCalcium carbonate shares the typical properties of other carbonates. Notably:\n\n   1. it reacts with strong acids, releasing carbon dioxide.\n\n        CaCO3 + 2HCl → CaCl2 + CO2 + H2O\n\n   1. it releases carbon dioxide on heating (to above 825 °C in the case of CaCO3), to form calcium oxide.\n\n        CaCO3 → CaO + CO2\n\nCalcium carbonate will react with water that is saturated with carbon dioxide to form the soluble calcium bicarbonate.\n\n    CaCO3 + CO2 + H2O → Ca(HCO3)2\n\nThis reaction is important in the erosion of carbonate rocks, forming caverns, and leads to hard water in many regions.\n[edit]\n\nUses\n\nThe main use of calcium carbonate is in the construction industry, either as a building material in its own right (e.g. marble) or as an ingredient of cement.\n\nCalcium carbonate is widely used in the pharmaceutical industry, either as an antacid, a calcium supplement (approximately 600 mg of calcium per gram of calcium carbonate), or as a base material for tablets of other pharmaceuticals.\n\nCalcium carbonate is known as whiting in ceramics/glazing applications, where it is used as a common ingredient for many glazes in its white powdered form. When a glaze containing this material is fired in a kiln, the whiting acts as a flux material in the glaze.\n\nIt is commonly called chalk as it has been a major component of blackboard chalk. Chalk may consist of either calcium carbonate or gypsum, hydrated calcium sulfate CaSO4·2H2O.\n\nRecently, calcium carbonate has begun to replace kaolin in the production of glossy paper.\n\nIt is also the substance from which the lens of the mammalian eye is made.\n\nIn 1989, Dr. Simmons introduced CaCO3 into the Whetstone Brook in Massachusetts. His hope was that the calcium carbonate would counter the acid in the stream from acid rain and save the trout that had ceased to spawn. Although his experiment was a success, it did increase the amounts of aluminum ions in the area of the brook that was not treated with the limestone. This shows that CaCO3 can be added to neutralize the affects of acid rain in river ecosystems.\n[edit]\n\nExternal links\n\n    * International Chemical Safety Card 1193\n    * CID 516889 from PubChem
624707
Small box with bubble wrap around the egg and plastic packing peanuts should do the job.  I had a marketing class on wrapping and we kicked it down the stairs and my egg was safe and sound.\n\nTest it at home before bringing it to class.
410974
beeswax and it doesnt contain calcium
914298
How often varies by the breed of the chicken, the type of feed, and other conditions such as weather and whether the bird is molting or not.  The shell of the egg acts as a mammals uterus would, protecting the the contents(baby chick or scrammbled eggs) and housing nutrients.  This is the chickens way of having large numbers of chicks at one time, as eggs that are fertilized do not begin gestation until the proper temperature is maintained on a regular basis.  Chickens will lay eggs over the period of several weeks before sitting on them to produce the correct thermo-environment.  Not all eggs are fertilized because just like humans, a sperm donor is needed.  A chicken may "be with" a rooster only once, yet produce fertilized eggs for several days.  Molting is a period when the chicken is going through physical changes, during this time no eggs are produced.  A sign of molting is loss of feathers and bad mood swings!  Molting occurs about once a year in mature birds.  Sometimes eggs used for human consumption are fertilized unintentionally.  These eggs have a red dot in the white of the egg.  This is the reason most cooks crack eggs into a separate bowl before adding them to their recipes.  The red dot would have turn into a chick had the egg not been cooled by refridgeration.  sometimes eggs are not produced because the diet is lacking certain nutrients, usually feeding the chickens the used egg shells from the kitchen will help to cure this deficiency and the bird will begin to produce eggs.  Chickens are an inexpencive yet interesting animal that can be lots of fun raising with children.  Also, their are minature chickens and chickens that have different colored eggs known as easter egg chickens(anaconas, i think) Its been a while since i raised chickens but it was quite an experience, hope this helps!
252859
282 Calcium propionate.\nFor more info go to link:\nhttp://www.fedupwithfoodadditives.info/factsheets/Fact282.htm
623826
My parents raise chickens, so I eat quite a few true free range eggs.  Then sometimes I go to IHOP.  The flavor difference is almost night and day.  The free range eggs have are almost orange with a "thick" yolk. So you can almost see the nutritional difference.\n\nThey almost have 4 times the value of beta carotene, and Omega 3 (the one from fish!!) and almost 1/2 the cholestrol.  However it depends on the farm and how "free range" the chickens actually are.  \n\nAlso if you can get farm fresh eggs, they are "newer" than commercial eggs by days, even weeks.
324108
The shell of a snail is more like the bivalve crestations than the arthropod crestations.  Thus the chemical composition of a snails shell is not CaCo3 (kiton) but rather SiCO3 silicon carbonate and SiPO4 silicon phosphate.
785569
Yes, the sulfur in hard-boiled eggs give the yolk a greenish tint. if you are talking about the shell color, there is a breed of chicken called the araucana/amerucana that can lay bluish-green eggs. I don't know really know the mechanisms to why the shell color comes out a certain way, but i do know that you can look at a hen and determine what color her egg shells will be by looking at her ear lobes (ie. white egg layer will have white ear lobes, brown egg layer will have brown ear lobes) i haven't seen an amerucana in a long time so i cannot tell you what color they're earlobes are! hope that answers your question!! :)
274000
The widely accepted constituent of Chalk is in fact Calcium Carbonate (CaCo3)
46468
Anything with calcium in it.\nMilk, Cheese, Ice Cream, Milk Chocolate