What is calclum?

What is another name for the heart? What one word best describes sodium chloride? Why does the candle flame goes out when placing a glass over it? Is nitrogen need for a fire? What is the simplest organic acid? What is gallium with chlorine as a chemical formula? What do you plant cells use to produce glucose and oxygen? What deficiency do you get from taking in too little of iodine? Why are Alternative fuels considered synthetic? Methanol how long can you store methanol before it goose bad? How much iodine is in chicken thighs? What is a monomer of nucleic acids? What would be the effect on the boiling point of ethyl alcohol if the pressure were reduced during the distillation process? Why does sodium react with chlorine? Can neptonium combine with other elements? When a person inhales oxygen fills tiny air sacs in the person's lungs. Next the oxygen moves from these air sacs into small blood vessels that line the lungs and then it moves into the bloodstream so? What is stronger diamond or titanium? What makes the distilled water an insulator? What is Iodine solution? Is water a physical or chemical change?

What is calclum?