University of Illinois - Springfield Copyright © 2014 The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. 1 Bonding • Bonding is the joining of two atoms in a stable arrangement. • Through bonding‚ atoms attain a complete outer shell of valence electrons (stable noble gas configuration). • Atoms can form either ionic or covalent bonds to attain a complete outer shell (octet rule for second row elements). • Ionic bonds result from the transfer of electrons from one
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THE CHEMISTRY OF LIFE (Review 1-7) I. Basic Chemistry A. Elements 1. Definition- an element is a substance composed of a single type of atom 2. Major elements of the human body 3. Trace elements of the body B. Atoms 1. Definition- the atom is the smallest part of an element which cannot be broken down further by ordinary chemical means. Atoms are composed of protons‚ neutrons and electrons. 2. Particles that make up atoms
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MAPÚA INSTITUTE OF TECHNOLOGY School of Chemical Engineering and Chemistry COURSE syllabus 1. Course Code: CHM11- 3 2. Course Title: GENERAL CHEMISTRY 1 LECTURE (for Non- CHE –CHM students) 3. Pre-requisite: None 4. Co-requisite: None 5. Credit: 2 units 6. Course Description: A course designed for freshmen engineering students‚ it covers the structure of the atom‚ writing chemical formulas‚ naming of compounds and stoichiometry involving chemical formulas
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non-polar covalent bonds. Example: H2 ‚ Cl2 ‚ I 2 Polar molecular solids → The molecules ion these types of solids are held together by strong dipole-dipole interactions. Example: Solid SO 2 ‚ solid NH3 Hydrogen-bonded molecular solids → The molecules of such solids contain polar covalent bonds between H and f‚ O or N atoms. Example: Ice (H2 O) Ionic solids Ions are the constituent particles; e.g.‚ NaCl‚ KNO 3 Metallic solids Each metal atom is surrounded by electrons; e.g.‚ Fe‚ Cu Covalent or network
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water to form alkaline solutions Neutral Oxides * Do not display either of the acidic or the basic oxides’ properties. Giant Covalent Structures There are 2 examples of Giant covalent structures: Diamond & Graphite They are both allotropes of carbon‚ meaning they are both different types of the physical form of Carbon. Diamond Structure: Giant covalent lattice of carbon atoms. Each Carbon atom is bonded to 4 others which tetrahedrally surround the atom. They have a high melting point as
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Lesson 1.1 - Study Materials Slide 1 Lesson 1.1 : Scientific Method 1. Steps of the Scientific Method The scientific method (performing a study in organized steps) consists of: For example‚ applying the scientific method ultimately led to the enunciation of the Law of Conservation of Mass and Matter. Slide 2 1. Steps of the Scientific Method Step 1: Performing Experiments An experiment is a set of steps (procedures) that are performed under controlled conditions to propose or test
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3d10 4p6 5s2 4d1 Noble Gas form: Kr 4d5 5s1 QUESTION 3 Compare the relative differences in strength that results from ionic‚ covalent and metallic boding. There are two types of bond‚ the strong bonds and the weak bonds. Covalent bond is part of strong bond and it has the highest strength among the strong bond. Ionic bond is part of the strong bond but the strength of ionic bond is a medium strong bond. The metallic bond is also part of the strong bond but the strength of the metallic bond is
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English Proficiency This test is designed to assess the test takers’ general proficiency in the use of English language as a means of self-expression in real life situations and specifically to test the test takers’ knowledge of basic grammar‚ their vocabulary‚ their ability to read fast and comprehend‚ and also their ability to apply the elements of effective writing. 1. Grammar 1. Agreement‚ Time and Tense‚ Parallel construction‚ Relative pronouns 2. Determiners‚ Prepositions‚ Modals
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GRADE 9 Learning Module SCIENCE (Qtr 1 to 4) Compilation by Ben: r_borres@yahoo.com 1 UNIT 1 Living Things and Their Environment DRAFT April 29‚ 2014 Photo Credit: http://www.flyingfourchette.com/2013/05/25/around-ubud/ Suggested time allotment: 8 to 10 hours 2 Unit 1 MODULE 1 Respiratory and Circulatory Systems Working with Other Organ Systems Overview Your body is a fascinating creation that can carry out incredible tasks and activities. It is like a machine that
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Practice Exam Chapter 8 I have put the questions we may not get to for this exam at the end of the practice exam) 1. How many lone pairs of electrons are assigned to the sulfur atom in H2S? a) 0 b) 1 c) 2 d) 3 e) 4 2. Which of the following is a correct Lewis structure for nitrous acid‚ HNO2? 3. The central atom in PH3 is surrounded by a) three single bonds and no lone pairs of electrons. b) three single bonds and one lone pair of electrons. c) three single bonds and two lone
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