SCI 220 chapter 1 What is a definition for nutrition? Nutrition is the science that links foods to health and disease. Play audio for this term What does the subject of nutrition include? The subject of nutrition includes the processes by which the human organism ingests, digests, absorbs, transports, and excretes food substances. What is the benefit of food to the body? Food provides the energy in the form of calories as well as the materials needed to build and maintain all
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composition molar mass( element)molar mass (compound)x 100 * Intermolecular forces * Dispersion forces: are the weakest of intermolecular forces * Dipole-dipole forces: attraction between partially positive and partially negative atoms. Also called polar bonds. Stronger than dispersion forces, occur due to the uneven sharing of electrons * Polar: HCl, H20, NH3, H2S * Non polar: CO2, CH4, NO2 * Hydrogen bonding: when molecule contains hydrogen with N, O
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Physical Chemistry Understanding our Chemical World Physical Chemistry Understanding our Chemical World Paul Monk Manchester Metropolitan University, UK Copyright 2004 John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, West Sussex PO19 8SQ, England Telephone (+44) 1243 779777 Email (for orders and customer service enquiries): cs-books@wiley.co.uk Visit our Home Page on www.wileyeurope.com or www.wiley.com All Rights Reserved. No part of this publication may be
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around since before time these element have existed since before time. It was only up to us to find each and every one of them. Every element is unique in their own way. Each have different amounts of protons and electrons, have different masses, and are in different states of matter. Sodium, Oxygen, and Carbon each have different components and different ways that they react with other elements. Sodium Sodium is the eleventh element on the periodic table of elements. This means it has 11 protons
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CHEMISTRY CHEMISTRY (CLASSES XI–XII) Rationale Higher Secondary Stage is the most crucial stage of school education because at this stage specialised discipline based, content oriented courses are introduced. Students reach this stage after 10 years of general education and opt for Chemistry with a purpose of mostly for pursuing their career in basic sciences or professional courses like medicines, engineering, technology and studying courses in applied areas of science and technology at tertiary
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1. What is a nucleon? Protons and neutrons 2. What is fusion? Is two smaller atoms come together 3. How does mass per nucleon in a hydrogen atom compare to the mass per nucleon in a helium atom? 4. What happened to cause the mass per nucleon to change? When to two atoms comes together a pieces of mass is lost and converted into energy. 5. What is fission? Fission is when the nuclease of an atom splits into smaller pieces. 6. How does mass per nucleon change in a fission reaction
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------------------------------------------------- Histor First systemization attempts In 1789, Antoine Lavoisier published a list of 33 chemical elements, grouping them into gases, metals, nonmetals, and earths; Chemists spent the following century searching for a more precise classification scheme. In 1829, Johann Wolfgang Döbereiner observed that many of the elements could be grouped into triads based on their chemical properties.Lithium, sodium, and potassium, for example, were grouped together in a triad
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Module 02. Physics 1. Matter. Question Number. 1. An atom with 3 free electrons in its outer shell is said to be. Option A. pentavalent. Option B. covalent. Option C. trivalent. Correct Answer is. trivalent. Explanation. Number of electrons in the outer shell is called the valency - 1 = monovalent, 2 = divalent, 3 = trivalent etc. Question Number. 2. What is the mass number of an element?. Option A. Number of electrons and protons. Option B. Number of neutrons and protons. Option C. Number of
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Yeast Culture Lab Introduction Yeast is a one-celled, microscopic organism, which is part of the fungi kingdom. Yeasts do not make up a single group (Smith & Smith, 2012). Yeasts use organic material as a means of making energy, which make them chemoorganotrophs (Smith & Smith, 2012). Carbon is procured primarily from hexose sugars, such as fructose and glucose. Yeast need either oxygen for aerobic cellular respiration or for species that are anaerobic, but also
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Scientific Study of Life * The Cell is the basic Unit of life. * An Organism is a living individual and consists of one or more cells The levels of Biological Organization are (smallest to largest): * Atoms = The smallest chemical unit * Molecule = Group of joined atoms * Organelle = Membrane bounded structure that has a specific function within a cell * Tissue = Collection of specialized cells that function in coordination * Organ = Structure consisting of tissues organized
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