QMRP is an acronym for Qualified Mental Retardation Professional. This term was first used in federal standards developed in the late 1970s and early 1980s for intermediate care facilities for the developmentally disabled (ICF/DD).
Physical properties. Calcium is a fairly soft metal with a shiny silver surface when first cut. The surface quickly becomes dull as calcium reacts with oxygen to form a coating of white or gray calcium oxide. Calcium's melting point is 850Â°C (1,560Â°F) and its boiling point is 1,440Â°C (2,620Â°F).
Another chemical property of calcium is that, when it burns, it makes a bright reddish-yellow flame. Finally, most of the halogen elements will react with calcium simply by coming into contact with it, forming compounds. The exceptions are bromine and iodine; calcium only reacts with these two substances when heated.