particles called protons‚ electrons‚ and neutrons. Protons carry a positive electrical charge‚ electrons carry a negative electrical charge‚ and neutrons carry no electrical charge at all. The protons and neutrons come together in the central part of the atom‚ called the nucleus‚ and the electrons ’orbit’ the nucleus in the electron cloud. An element is a substance that is made entirely from one type of atom. For example‚ the element hydrogen is made from atoms containing a single proton and a single
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Online Submissions: http://www.wjgnet.com/1948-9358office wjd@wjgnet.com doi:10.4239/wjd.v2.i12.217 World J Diabetes 2011 December 15; 2(12): 217-220 ISSN 1948-9358 (online) © 2011 Baishideng. All rights reserved. BRIEF ARTICLE Are proton pump inhibitors a new antidiabetic drug? A cross sectional study Diana Boj-Carceller‚ Pilar Bocos-Terraz‚ Miguel Moreno-Vernis‚ Alejandro Sanz-Paris‚ Pablo Trincado-Aznar‚ Ramón Albero-Gamboa Diana Boj-Carceller‚ Alejandro Sanz-Paris‚ Pablo TrincadoAznar
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combine in simple whole-number ratios to form compounds (see below)‚ in a chemical reaction‚ atoms are separated‚ combined‚ or rearranged. Whole-number ratios: No halfsies. But he was wrong about atoms being indivisible (that’s how we know about protons and neutrons and electrons and the other subatomic particles). And how atoms of the same element have identical properties: atoms of an element may have slightly different masses‚ e.g: ISOTOPES. You can see an atom using the scanning tunneling
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the history of Perusahaan Otomobil Nasional Berhad (PROTON). It is the national car project whose brainchild was none other than the Prime Minister Dr Mahathir himself. Prior to the incorporation of PROTON on 7 May 1983‚ the industry comprises mainly of assemblers of foreign cars such as Tan Chong Motors‚ the assembler for completely knock down (CKD) Nissan cars and Kah Motors‚ the assembler for CKD Honda cars. Since the inception of PROTON and subsequently PERODUA‚ the country second national
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different elements absorb and emit different wavelengths of light. (2) Gamow thought that nuclear fusions took place in the first minutes after the Big Bang‚ because he assumed that the initial components of the universe would have been seperate protons‚ neutrons and electrons. He hoped that they could build bigger atoms by fusion in the heat of the Big Bang‚ because nucleosynthesis‚ which
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to ADP * Only occurs during glycolysis when O2 is not needed to function * Only a small amount of ATP is produced this way e. Electron Transfer /Chemiosmosis: the movement of protons (H+) down a concentration gradient through ATP synthase that can HARNESS THE ENERGY OF THAT GRADIENT (proton-motive force) to bond ADP and phosphate to create ATP through oxidative phosphorylation * Occurs during the Light Dependent Reaction * 90% of ATP is produced this way
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Modern theories For a long time‚ it was thought that the proton‚ neutron‚ and electron were the elementary particles‚ as well as the smallest. Since the Atomic Theory was formulated‚ many new particles have been discovered. The new theories concerning these particles and predicted particles attempts to explain every phenomena in physics. This is also called the Universal Theory of Matter. Dark Matter and Dark Energy Dark matter is an assumed kind of matter which unlike ordinary matter does
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Isotopes are different types of atoms (nuclides) of the same chemical 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
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Compared to an electron in the first electron shell of an atom‚ an electron in the third shell of the same atom has (1) less mass (2) less energy (3) more mass (4) more energy 8. ____ An atom in the ground state contains a total of 5 electrons‚ 5 protons‚ and 5 neutrons. Which Lewis electron-dot diagram represents this atom? 9. Determine the percent composition by mass of oxygen in the compound C6H12O6. State‚ in terms of subatomic particles‚ how an atom of C-13 is different from an atom of
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1. Atomic and Molecular Structure a. Students know how to relate the position of an element in the periodic table to its atomic number and atomic mass. The Periodic Table organizes elements by their atomic number - from hydrogen (1) to whatever is the highest one currently known (>105). It is arranged so that similiar members fall in a list such as Chlorine Bromine etc.. The average atomic weight is usually shown with each element‚ but due to isotopes (caused buy nuclear varations)
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