Calcium

CaCl2 (aq) + 2NaOH(aq) = Ca(OH)2(s) + 2NaCl(aq)

Calcium hydroxide is produced commercially by treating lime with water:

Thank you for your question.

The highest nutritional source of calcium is found in: Sesame Seeds.

They contain 975mg per 100g serving. which is 98% of the Daily Value.

Make sure they are whole (Unhulled) and not Decorticated.

This is Because 93.8% of the Calcium is found in the hull of the Sesame seed.

For Comparison:

1 cup (244grams) of Whole Cows Milk contains 276mg of Calcium. (28% of the Daily Value)

1 cup (244grams) of Whole Sesame Seeds contains 1404mg of Calcium (140% of the Daily value)

(Source: http://www.nutritiondata.com)

-If i find a higher source of calcium, this answer will be updated-

Sodium is a metal, having atomic number 11.

Some calcium rich food that would be good to eat would include most foods under the dairy group, such as milk and yogurt. Some other calcium rich foods include broccoli, spinach, almonds, sardines, and oranges.

The calcium hydride (CaH2) is obtained.

yes

Calcium Iodide, CaI2, contains calcium, Ca and iodine, I.

Actin changes shape.

The melting point of Calcium is 839℃ and the boiling point is 1484℃.

The Thyroid gland is not involved in blood calcium levels to a greater extend. However, the parathyroid hormones regulate blood calcium levels very tightly. This is made possible with help from vitamin D.

In fact: removing the parathyroid glands would result in death in a matter of a few days, most likely due to hypocalcemia. This would result in muscle cramps, and death would likely be caused by spasm of the diaphragm muscle and/or spasm in the muscles surrounding the larynx resulting in suffocation.

milk etc....

Carbon dioxide does not react with calcium carbonate unless water is present. Carbon dioxide plus calcium carbonate plus water produces calcium bicarbonate. The balanced chemical equation is:

CO2(g) + CaCO3(s) + H2O(l) --> Ca(HCO3)2(aq)

Covalent bonds are formed between non-metals only, while ionic bonds are formed between metals and non-metals. Since calcium is a metal and iodine is a non-metal, this would not be a covalent bond.

Ionic bond, as the difference in electronegativity between calcium and fluorine is over 1.7

Calcium is in group 2 of the Periodic Table. The group consists of beryllium, magnesium, calcium strontium, barium and radium. Calcium is in period 4.

One important use for calcium is to allow blood to clot when you are injured.

potassium in a metal while oxygen is a non-metal therefore pottasium oxide has ionic bond

If you put water into water, it would eventually get mixed.

Fresh water is less dense than salt water and fresh water from rain or rivers will "float" on underlying salt sea water.

Water of different temperature and different salinity have different densities and do make layers in the oceans and lakes of the world.

Ordinary water will usually mix rather than separate, unless it is frozen into ice, which is less dense than liquid water.

There is also "heavy water" that has deuterium in the place of ordinary hydrogen and is ABOUT 11% denser than ordinary water, which will float above it.

Yes, but often imperfectly and it takes a great deal of time. Cartilage tends to have a very poor blood supply, so it takes a long time for the cells to gather enough nutrients to build more matrix and repair the damage. If the damage was too severe, the cartilage will not have time to repair the damage before bony changes take over and prevent a return to normal function.

I would imagine you are talking about breaking down and building up of bone. Osteoclasts, and osteoblasts. Two types of cells that are constantly breaking down and rebuilding bone. Osteoclasts break down the bone acidically. While osteoblasts rebuild bone, by secreting osteoid, that becomes mineralized.

Ha, I had this exact same question in my AP Chem Class, stumped me for a minute too. 6CaO + P4O10 → 2 Ca3(PO4)2

Calcium is a chemical element, you typically take it in the form of the salt Calcium Carbonate. It is not a vitamin. It is typically referred to as a mineral.

Calcium is in group 2 of the periodic table. The group consists of beryllium, magnesium, calcium strontium, barium and radium. Calcium is in period 4.