Phosphorus is the best Element that you can buy in the market anywhere in the world for the use of fire to things like pesticide. Phosphorus was discovered in 1669 by a man named Hennig Brand in Hamburg‚Germany when he was preparing it from buckets of urine because urine contains high quantities or dissolved phosphorus. The Element was named Phosphorus because it comes from a Greek word called phôs (light) and phoros (bearer) which means “bringer of of light”. Phosphorus which has the Element symbol
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The universe is made up of 93.5% of Hydrogen atoms‚ 6.3% of Helium and 0.2% of other elements. By looking at the spectrum of hot stars‚ upper solar atmosphere and solar wind‚ an abundance of Helium is determined. Only from the 1920s there were methods of calculating what elements were present in a gas by just observing its spectrum‚ due to the fact that different elements absorb and emit different wavelengths of light. (2) Gamow thought that nuclear fusions took place in the first minutes after
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naturally occurring or synthetic radioactive form of an element. Most radioisotopes are made by bombarding a stable element with neutrons in the core of a nuclear reactor. The radiations given off by radioisotopes are easy to detect. Most natural isotopes of relative atomic mass less than 208 are not radioactive. Those from 210 and up are all radioactive.”(Radioisotope - Hutchinson Encyclopedia) (Radioisotopes image) An example of such radioisotopes is uranium‚ which has been serving us for the
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What is nuclear medicine? Nuclear medicine is a division of medical imaging that detects and treats diseases and irregularities in the body such as cancer and neurological illnesses through the use of radioactive chemicals. The techniques used in nuclear medicine allow physicians to attain knowledge about patient conditions without the invasion of personal space through procedures such as biopsies. The equipment and machines used within this branch are important for research as they allow for a better
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2.90 mL 10. The following species‚ 17Cl-‚ 18Ar‚ and 19K+‚ all have the same number of Chemistry 161 a. protons. Sample Quiz Chapters 1&2 KEY b. electrons. c. neutrons. Harold d. isotopes. 11. How many protons‚ neutrons‚ and electrons are in one atom of e. nucleons. 119 50 p 69 n 50 e- 50Sn? S2- 12. What is the symbol of the species that has 16 protons and 18 electrons? 13. An atom that has the same number of neutrons
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The mass # is determined by adding together the number of protons and neutrons in the nucleus. The atomic # itself is what defines the element and also represents the number of protons in the nucleus. 3) What is an isotope? Give an example (show how it is an isotope). An isotope is an atom of the same element that has a different mass number due to different numbers of neutrons. EX: radioisotopes=emit radiation in the form of subatomic particles. 4) Compare and contrast the 3 basic types of
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he atom is the basic unit of chemical matter. The atom is the smallest unit that defines the chemical elements and their isotopes. Everything that is solid‚ liquid‚ or gas is made up of atoms. Everything that can be seen and touched is made up of atoms. Atoms are tiny; their size is typically measured in picometers (trillionths of a meter). A single strand of human hair is about one million carbon atoms wide.[1] Every atom is composed of a nucleus made of protons and neutrons (hydrogen-1 has no
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Tellurium Many historians believed that Franz Joseph Müller von Reichstein was born around 1740’s to 1742 in the Habsburg Empire‚ which later became known as the Austro-Hungary Empire. Müller had many different positions in the Austria-Hungary administration; but he’s most known for being a mineralogist and skilled miner. He started his rode to success by becoming a Markscheider (official mine surveyor)‚ which then lead him to become an Hüttenwerke (royal commission for mining in the Banat). These
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of 235U in it‚ a radioactive isotope that breaks down readily‚ releasing neutrons to break apart other atoms. Although the small amount of Uranium-235 produced only half a watt of energy‚ it was the proof of concept the team needed to proceed forward. It showed fission‚ the process of the atomic weapons to come. It broke the simple laws of chemistry‚ matter cannot be created nor destroy‚ as they shot a neutron (a neutrally charge nucleon)‚ at an unstable isotope of Uranium-235‚ splitting it
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The discovery of copper does not have an exact date. Copper is said to be a prehistoric element. This element was said to be first discovered around 8000BC. The ancient civilizations started to take the copper out of the ore they found around 4000BC. This is when copper started to be put to good use. Early civilizations discovered that copper is malleable and is sharp. They realized they could make copper into tools and weapons. This was easier than the stone that they were originally using. This
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