For helium – an airy-fairy blonde with a bit of a squeaky voice, but with aspirations to join the nobility. If I had to choose a person to represent gold, then I guess it might be an ambitious young stockbroker, a bit flashy, and not great at forming relationships. Next week, if you were an element which one would you be? That was Strathclyde University's Karen Faulds with the story of calcium. Well, I'm very at home with my hard water, and the local beer tastes quite good too, although I do get through quite a few kettles – indeed Russell Hobbs probably owe their buoyant share price just down to me. So from strong teeth and bones, through to good tasting beer and ensuring hermit crabs find their perfect home – you can see that calcium really is an essential element. If your blood is lacking calcium or one of these other nutrients, it will take longer than normal for your blood to clot. Calcium, vitamin K, and a protein called fibrinogen help the platelets to form a clot. When bleeding from a wound suddenly occurs, platelets gather at the wound and attempt to block the blood flow. Calcium is also very important in helping blood to clot.
Fluxes of Ca 2+ trigger enzyme action in cells in response to receiving a hormonal or electrical signal from elsewhere in the organism. This loss of bone mass which occurs with increasing age makes bones more susceptible to breaking under stress and it occurs mainly in older people, especially women.Ĭalcium ions also play a crucial role in higher organisms as an intracellular messenger. Bone does not last forever a serious medical problem is osteoporosis which is the decalcification of bone. Thus, during pregnancy, bones tend to be raided for their Ca in a process called demineralisation.
The bone in our body functions not only as a structural support, but also as the central Ca store. Indeed, the different properties (such as stiffness) of bone are produced by varying the amount of organic component, mostly a fibrous protein called collagen, with which hydroxyapatite is associated. Calcium phosphate (also known as hydroxyapatite) is the mineral component of bones and teeth and is a particularly good example of how organisms fabricate 'living' composite materials. Calcium is used to produce the minerals contained in bones, shells and teeth through a process called biomineralisation.
#Ca element chemistry tv#
Which is what the old milk TV adverts were trying to tell us after all. R adium is extremely radioactive, and only occurs as part of the decay chains of heavier elements such as thorium and uranium.Calcium is what is known as an essential element, meaning that it is an element which is absolutely necessary for life processes. Saturated Unsaturated and Supersaturated.Reaction Quotient and Le Chatelier's Principle.Prediction of Element Properties Based on Periodic Trends.Molecular Structures of Acids and Bases.Ion and Atom Photoelectron Spectroscopy.Elemental Composition of Pure Substances.Application of Le Chatelier's Principle.Structure, Composition & Properties of Metals and Alloys.Intramolecular Force and Potential Energy.Variable Oxidation State of Transition Elements.Transition Metal Ions in Aqueous Solution.
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