DEFINITION: The artifacts and ecofacts used by a group to cope with their physical and social environment. Material culture includes the buildings, tools, and other artifacts that constitute the material remains of a former society -- its technology and artifacts combined.
Calcium is a chemical element with symbol Ca and atomic number 20. Calcium is a soft gray alkaline earth metal, fifth-most-abundant element by mass in the Earth 's crust. The ion Ca 2+ is also the fifth-most-abundant dissolved ion in seawater by both molarity and mass, after sodium, chloride, magnesium, and sulfate.alcium salts are colorless from any contribution of the calcium, and ionic solutions of calcium (Ca 2+) are colorless as well. As with magnesium salts and other alkaline earth metal salts, calcium salts are often quite soluble in water.
Best Answer: An ion is an atom (or group of atoms) that has gained or lost one or more electrons. Many main group elements gain or lose electrons such that they have the same number of electrons as a Noble gas.Calcium, and all of the alkaline earth elements, lose two electrons.Since electrons are negatively charged, the loss of electrons gives the resulting ion a positive charge. So the answer is that the calcium ion has a 2+ charge.A calcium atom has 2 outer shell electrons.) I believe the answer is -2 because of the 2 outer shell electrons...but wouldn't it be different if it is an ION and not just an Atom?