Plutonium was named after the planet Pluto‚ after the planet Neptune in the solar system and Neptune gave its name to Neptunium. <br><br>Plutonium is a silvery metal that turns yellow when exposed to air. It is warm to the touch due to the releasing radioactive energy from it. The atomic number of Plutonium is 94. It has an average atomic mass of 244. The symbol for plutonium is Pu. Plutonium is a lot like calcium. This is why take its place in bones‚ breaking down marrow cells and in doing so causing
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PHYSICS UNIT 2 Physics P2 for GCSE Additional Science or GCSE Physics AQA GCSE Science PHYSICS 2 Unit P2.1 Forces and their effects Appreciate that forces can cause changes to the shape or motion of an object. Not only can objects can move in a straight line at a constant speed but they can also change their speed and/ or direction (accelerate or decelerate). Be able to use/produce graphs can help us to describe the movement of an object. These may be distance-time graphs or velocity-time graphs
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Gr7 Science: Applications of the Atom Can The Demonstrated Vast Destructive Power of Nuclear Bombs Continue To Act As A Deterrent To World War III? In early August 1945 an American B-‐29 bomber‚ along with two other planes‚ dropped Little Boy onto the Japanese City of Hiroshima. Then
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The Half-Life of a Radioisotope CHM 152 Abstract: The half-life of an unknown radioactive isotope was investigated. The activity of the samples through use of a Geiger-Muller counter. The activity was measured for approximately five minutes per sample‚ and a half-life was calculated by the unknown. The results were calculated to indicate a half-life of 6.65 days of the unknown radioisotope. Introduction: The half-life of a radioisotope is defined as the amount of time necessary for one-half
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controversial. Many say the dangers of using radioactive materials on human bodies are far more negative than positive. Others strongly agree with the use of radiochemistry in the field of medicine. Nuclear medicine is in the field of medicine by using imaging devices. Doctors use small amounts of radioactive materials called radio tracers that are either injected into the bloodstream‚ inhaled or swallowed. Radiation therapy is also a therapy that uses radioactive materials to treat cancers. The use of
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Antoine Henri Becquerel was born in Paris on December 15‚ 1852. He was a member of a family of scholars and scientists over four generations‚ including his grandfather‚ Antoine-Cesar Becquerel (1788-1878)‚ his father‚ Alexandre-Edmond Becquerel (1820-91)‚ and his own son Jean Becquerel (1878-1953). After his early schooling at the Lycee Louis-le-Grand‚ Henri studied engineering at the École des Ponts et Chaussées (1874-77)‚ history at the École Polytechnique (1872-74) and his fields of science were
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(~2 nm) X-rays in water is less than 1 micrometer.[4] The distinction between X-rays and gamma rays has changed in recent decades. Originally‚ the electromagnetic radiation emitted by X-ray tubes had a longer wavelength than the radiation emitted by radioactive nuclei (gamma rays).[5] Older literature distinguished between X- and gamma radiation on the basis of wavelength‚ with radiation shorter than some arbitrary wavelength‚ such as 10−11 m‚ defined as gamma rays.[6] However‚ as shorter wavelength continuous
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• evaluate technological applications related to the use of isotopes in biology and medicine Copyright © 2012 The Ontario Educational Communications Authority. All rights reserved. ilc.org 2 Lesson 1 Biology SBI4U-C Chemistry Basics In this lesson‚ you will begin to explore the structure and function of the chemical components of living organisms. You will start by reviewing concepts of atomic structure‚ isotopes‚ and chemical bonding‚ as well as the main types of chemical
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Dalton’s theory are that his second law that all atoms of the same element are the same is false because today we have found that there are other kinds of atoms called isotopes. An isotope is an atom that has the same amount of electrons and protons‚ but it has more neutrons that increase its atomic mass. Some examples of isotopes are Carbon 12‚ carbon 13‚ carbon 14‚ Uranium (234‚ 235‚ and 238) and lithium (6‚ 7). Carbon 14 is especially useful because we know its rate of decay and can use to find
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PHYSICAL CHEMISTRY CHAPTER 1 Principle of Chemistry Relative Atomic Masses of atoms & molecules Mass number & atomic number Atomic structure (neutrons‚ protons & electrons) Mole concept & conversion Avogadro’s concept Empirical & molecular formulae Isotopes FHSC1114 Physical Chemistry Centre for Foundation Studies‚ UTAR Objectives To define relative atomic masses of atoms & molecules To define & determine mass no. & atomic no. To determine no. of neutrons‚ protons & electrons To understand
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