bonds b. covalent bonds c. polar ionic bonds d. nonpolar ionic bonds ____ 8. The maximum number of electrons in the shell closest to the nucleus is a. four. b. eight. c. two. d. one. ____ 9. A molecule of liquid water a. is nonpolar. b. is locked in a rigid three-dimensional lattice c. has no charge d. forms covalent bonds with other water molecules ____ 10. The atoms in molecules of oxygen gas and nitrogen gas are held together by a. nonpolar covalent bonds b
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Inorganic Chemistry 1. A subatomic particle with a single positive electrical charge is protons. 2. A subatomic particle with a single negative electrical charge is electrons. 3. A subatomic particle which is electrically neutral is neutrons. 4. The nucleus of an atom is made up of _protons_ and _neutrons. 5. The number of electrons forming a charge cloud around the nucleus is (pick one of the following) greater than; equal to; smaller than the number of protons in the nucleus of the atom.
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called a cation‚ while a negative ion is called an anion. 3. Define electronegativity and explain what it has to do with the behavior of outer-shell electrons. Electronegativity is the attraction of a given atom for the electrons of a covalent bond. The more electronegative an atom‚ the more strongly it attracts shared electrons. 4. What is a polar molecule? What is the nature of a hydrogen bond? A polar molecule is a molecule (such as water) with an uneven distribution
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How Primary Structure Determines Protein Function Proteins are everywhere. As enzymes‚ they catalyse chemical reactions. There are many different types of proteins: carrier and channel proteins which transport substances‚ receptor proteins which are recognition site for antibodies and hormones‚ structural proteins which support cells and tissues‚ and hormones which transmit information. Proteins are big molecules with large molecular masses that are made up of many amino acids; they’re‚ essentially
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COVENANT UNIVERSITY FACULTY OF SCIENCE AND TECHNOLOGY DEPARTMENT OF CHEMISTRY COURSE TITLE: General Organic Chemistry COURSE CODE: CHM 121 ‚ UNIT: 2.0 . INTRODUCTORY AND IMPORTANCE OF ORGANIC CHEMISTRY Organic chemistry is the study of the compounds of carbon. Carbon compounds are far more numerous than those of other elements because carbon are able to bond together to form a wide range of chains and rings. The subject is named organic chemistry because living organisms are composed
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name: Course Code: AS2129A13‚ AS2130A13 Programme Level & Title: BTEC Level 3 Extended Diploma in Health & Social Care (Health Science) Unit Number & Title: 15 Biochemistry for Health Assignment Title: 1‚ Atoms and simple Covalent molecules Assessor Name: Mark Ashby Date Issued: AS2129A13 17/09/13‚ AS2130A13 31/1/14 Date Due: AS2129A13 18/10‚ AS2130A13 7/3 Turnitin Score: Referral Date: Internal Verifier Name: Emma Wong Date IVed: 10/09/13
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Measurement 2.2 (a) Criteria of purity 2.2 (b) Methods of purification 3. Atoms‚ elements and compounds 4.1 Atomic structure and the Periodic Table 4.2 Bonding the structure of matter 3.2 (a) Ions and ionic bonds 3.2 (b) Molecules and covalent bonds 3.2 (c) Macromolecules 3.2 (d) Metallic bonding 3 Stoichiometry 4.3 The mole concept 4 Electricity and chemistry 5 Chemical energetics 6.4 Energetics of a reaction 6.5 Production of energy
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Bio 115 Exam 1 Study Guide These topics will be on the exam. ▪ What are the tenets of cell theory? • Cells are the basic structural and physiological units of all living organisms. • Cells are both distinct entities and building blocks of more complex organisms. OR • All living organisms are composed of one or more cells‚ Cells are the basic units of structure and function in an organism‚ and Cells come only from the reproduction of existing
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* Question 1 0 out of 1 points | | | Which bond or interaction would be difficult to disrupt when compounds are put into water?Answer | | | | | Selected Answer: | A. hydrogen bond | Correct Answer: | C. covalent bond | | | | | * Question 2 1 out of 1 points | | | What is the atomic number of the cation formed in the reaction illustrated above?Answer | | | | | Selected Answer: | D. 11 | Correct Answer: | D. 11 | | | | | * Question 3 1 out
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PRACTICAL III: THE BEHAVIOUR OF AMINO ACIDS IN SOLUTION Abstract In this practical the acid-base behaviour of amino acids was assessed. Amino acids are amphoteric. They have the basic (amine) and the acidic (carboxylic) functional groups. These show the same type of equilibrium reactions that all weak acids and bases undergo‚ and the relative amount of each can be altered by adjusting the pH of the solution. For this practical glycine was used as a model to show this unique nature of
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