element‚ each having a different number of neutrons. In a corresponding manner‚ isotopes differ in mass number (or number of nucleons) but never in atomic number.[1] The number of protons (the atomic number) is the same because that is what characterizes a chemical element. For example‚ carbon-12‚ carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12‚ 13 and 14‚ respectively. The atomic number of carbon is 6‚ so the neutron numbers in
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approximate values of the scale on each axis. (b) Use your graph to explain why energy is released when a neutron collides with a U nucleus causing fission. (2) (c) Neutrons are released when nuclear fission occurs in U. Some of these neutrons induce further fission‚ others are absorbed without further fission and others escape from the surface of the material. The average number of neutrons released per fission is 2.5‚ of which at least one must produce further fission if a chain reaction is to
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Chapter 4 The Chemical Basis of Life Introduction Your body is an elaborate chemical system. Chemical signals between brain less enable your mind to understand what you see. You nourish those cells with chemicals that are obtained from food. Life is all about chemicals and how they interact Concept 4.1 Life requires about 25 chemical elements Elements Humans and other organisms are examples of matter. Matter: Anything that occupies space and has mass. (Physical
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of nucleolus (P-P) or (N-N). this force demand the same spin & orbital angular momentum. The exchange interaction in produced by only a neutral meson. The involving mesons without electric charge‚ that it gives exchanges forces between proton & Neutron & also therefore maintains charge in dependence character. It is evident for the nature of the products that neutral mesons decay by strong & weak interaction both. It means that neutral mesons constituents responsible for the electromagnetic interaction
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a nucleus‚ which is made up of protons and neutrons. · Protons are positively charged particles. Neutrons have no charge. There is an outer layer made up of negatively charged electrons‚ which keep orbiting the nucleus in a random manner. · The number of protons and electrons are always equal in an atom. Because of this‚ the atom has got a neutral charge. · The protons and electrons weigh more or less equal and the total number of protons and neutrons put together make the atomic weight‚ e.g. if
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Cosmic Engine - Research Task 1. Describe how energy can be released from the nuclei of atoms (6) Most nuclei are stable. Consisting of protons and neutrons‚ they are unaffected by chemical reactions and have remained the same since they were formed. However‚ some nuclei are unstable and spontaneously release energy in the form of a Helium nucleus (α Alpha)‚an electron (β Beta) and γ Gamma rays. These nuclei are known as radioactive and it’s not possible to predict when a particular
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carbon family https://www.britannica.com/science/tin. Tin consists of 50 Protons‚ 69 Neutrons and 50 electrons. (my citation for where i got this information is the periodic table you gave to us.) The atomic number of tin is 50 because the atomic number is usually the same number of protons. The atomic mass is 118.71 u. I used my knowledge from the recent years in biology and physical science to use the protons and neutrons to determine the atomic mass. Tin is a metal because it is ductile and it is
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The element (einsteinium) has the atomic symbol of Es. Its atomic number is 99 while its atomic mass is 252. Einsteinium is located in period 7 of the periodic table as a part of the actinide series. It has 99 protons‚ 99 electrons‚ and 153 neutrons in its atoms. The physical appearance of einsteinium is not known‚ but it is predicted to be metallic and silvery white or grey. Einsteinium is classified as a metal and is a solid at room temperature. It has a melting point of 860°C and an atomic radius
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Energy: Nuclear Fusion‚ Hydroelectric‚ and Hydrogen Fuel Cells In today’s world‚ where everyone owns an electronic appliance‚ energy is an extremely valuable resource and in high demand. Though in the past this energy was provided by burning fossil fuels such as coal and natural gas‚ this way of providing energy can’t last much longer due to the dwindling amount of fossil fuels and the damage it causes to the environment. Therefore‚ scientists have been searching for new ways of providing energy
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Eli Rex PS 2713/GE 2713 Dr. Jerry Emison‚ Mr. Robert Green September 28‚ 2013 Is There a Nuclear Arms Threat? America has been considered a “superpower” state for decades. The Merriam-Webster Dictionary defines “superpower” as “an extremely powerful nation‚ especially one capable of influencing international events and the acts and policies of less powerful nations.” The earning of the title superpower comes with some benefits and disadvantages. Certain benefits America possesses is:
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