![]() ![]() ![]() In fact, if we take too much calcium and not enough magnesium, it can cause problems in the body. Magnesium is also necessary for proper assimilation and use of calcium in the body. In order for calcium to absorb properly, it should be taken with vitamin D. Foods high in calcium include dairy products - such as milk, cheese and yogurt - and some vegetables, such as kale, watercress, spinach and broccoli. In food, calcium is found in mineral form. They also assist in the release of hormones and enzymes. Calcium ions act as vital messengers between these cells and are necessary in all multicellular life forms. Cells in all living things must communicate with, or "signal," one another. Not only is it vital for bones and teeth, but it assists in muscle movement by carrying messages from the brain to all our body parts. (Image credit: Greg Robson/Creative Commons, Andrei Marincas Shutterstock) Essential mineralĬalcium is extremely important to the human body. Most common isotopes: Ca-40 (97 percent of natural abundance) Ca-44 (2 percent of natural abundance) Ca-42 (0.6 percent of natural abundance) Ca-48 (0.2 percent of natural abundance) Ca-43 (0.1 percent of natural abundance) Ca-46 (0.004 percent of natural abundance.Number of isotopes (atoms of the same element with a different number of neutrons): 24 5 stable.Melting point: 1,548 degrees Fahrenheit (842 degrees Celsius).Density: 1.55 grams per cubic centimeter.Atomic weight (average mass of the atom): 40.078.Atomic symbol (on the periodic table of the elements): Ca.Atomic number (number of protons in the nucleus): 20. ![]() Once calcium had been successfully isolated, the element was able to be studied further, revealing its importance for the survival of all living things. This time, Davy repeated their electrolysis method on the same calcium amalgam, but he added more lime to the mixture, producing more of the amalgam from which he was able to distill away the mercury, leaving only calcium, according to the Royal Society of Chemistry. A few other scientists, Magnus Pontin and Jöns Jacob Berzelius, had come close they had been able to produce a calcium amalgam after performing electrolysis on a mixture of lime and mercury oxide. In 1808, Cornish chemist and inventor Sir Humphry Davy was the first person to successfully isolate calcium. Calcium makes up about 4.2 percent of the Earth's crust by weight. Calcium compounds can be found in a variety of minerals, including limestone (calcium carbonate), gypsum (calcium sulfate) and fluorite (calcium fluoride), according to Chemicool. It is important to note, however, that calcium is never found in this isolated state in nature, but exists instead in compounds. In its pure elemental state, calcium is a soft, silvery-white alkaline earth metal. It is, however, the most abundant metallic element in the human body, 99 percent of which can be found in our bones and teeth (about 2 lbs. Interestingly, calcium seems to come in fifth place wherever it goes: It is the fifth most abundant element by mass in the Earth's crust (after oxygen, silicon, aluminum and iron) the fifth most abundant dissolved ion in seawater (after sodium, chloride, magnesium and sulfate) and the fifth most abundant element in the human body (after oxygen, carbon, hydrogen and nitrogen). ![]()
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