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Calcium isotopes


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The five stable isotopes of calcium (Calcium 40,42,43,44,46), its uses, percentage abundance and summary of report.

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Calcium isotopes

  1. 1. CALCIUM
  2. 2. ANSWER ME!
  3. 3. 1. Rank these foods by their calcium content (highest to lowest) SARDINES TOFU MILK
  4. 4. CORRECT ANSWER 382 mg 176 mg 125 mg sardines, tofu, milk
  5. 5. 2. Rank the fat content of the following animals' milk (highest to lowest) HOODED SEAL BLACK RHINOCEROS HUMAN
  6. 6. CORRECT ANSWER hooded seal, human, black rhinoceros Hooded seals have the fattiest milk (60%) while black rhinoceroses have the skimmest (0.2%).
  7. 7. 3. What percent of people are lactose intolerant? 20% 70% 60% 40%
  8. 8. CORRECT ANSWER About 70% of people can't produce lactase after childhood.
  9. 9. 4. How much calcium does a teen our age need? 1125 mg 1730 mg 1500 mg 1300 mg
  10. 10. CORRECT ANSWER 1300 mg is the daily recommended value.
  11. 11. 5. What is special about the casu marzu cheese?
  12. 12. CORRECT ANSWER They put insect larvae in it giving it the nickname "maggot cheese".
  14. 14. CALCIUM ● has 24 isotopes ● 5 stable isotopes and 19 radioactive isotopes exist ranging from 34Ca to 57Ca
  15. 15. FACTS ABOUT CALCIUM Calcium is a soft silvery metal at room temperature. Calcium burns with a bright orange-red flame in a flame test. 5th most abundant: element in the Earth's crust; dissolved ion in seawater; and element in the human body
  16. 16. FACTS ABOUT CALCIUM Calcium is never found in this isolated state in nature, but exists instead in compounds. In 1808, Cornish chemist and inventor Sir Humphry Davy was the first person to successfully isolate calcium.
  17. 17. CALCIUM-40 ● A stable isotope containing 20 neutrons ● Percentage abundance: 96.941% ● It is theorized to actually be a radioactive isotope with an extremely long half-life (~1021 years) based on its internal structure. No one has ever detected a decay of a calcium-40 atom.
  18. 18. CALCIUM-42 ● A stable isotope containing 22 neutrons ● Percentage abundance: 0.647% ● Calcium 42 Carbonate ● It is both naturally occurring and produced by fission. ● Calcium Carbonate is also available in ultra high purity and as nanoparticles. For the thin film applications it is available as rod, pellets, pieces, granules and sputtering targets and as either an ingot or powder.
  19. 19. CALCIUM-43 ● A stable isotope containing 23 neutrons ● Percentage abundance: 0.135% ● Both naturally occurring and produced by fission ● It is also available in ultra high purity and as nanoparticles. ● Calcium Carbonate 43 isotopic material is generally immediately available.
  20. 20. CALCIUM-44 ● A stable isotope containing 24 neutrons ● Percentage abundance: about 2% ● Appears as a white powder ● Melting point of 800oC ● Insoluble in water
  21. 21. CALCIUM-46 ● A stable isotope containing 26 neutrons ● Percentage abundance: 0.004% (rare stable isotope) ● It is theoretically unstable and could be radioactive. No one has ever observed the decay of a calcium-46 atom. ● It is used in making calcium-47.
  23. 23. Calcium Isotopes (mainly Ca-42, Ca-44, Ca- 46 and Ca-48) are used extensively in clinical research and mainly in nutritional studies. They are used to measure calcium absorption mainly in women and children. In adults, calcium deficiency is strongly related to increasing severity of osteoporosis. In children, calcium deficiency is primarily related to the development of rickets.
  24. 24. REFERENCES and-dairy/yogurt/calcium-in-yakult-yogurt-drink.html oq=calcium+content+of+TOFU&gs_l=serp.3..0j0i22i30k1.18025.18 540.0.18884. dNK6xdRNFOo