SCH4U 03/04/13 Hydrogen Bonding Purpose: The purpose of this investigation is to test the concept of hydrogen bonding. Hypothesis: Given the concept of hydrogen bonding I predict that the bulky glycerol molecules limits the number of possible hydrogen bonds. If water is mixed with glycerol should make it possible for water to form many hydrogen bonds with the glycerol molecules‚ causing it to become a exothermic reaction. Because glycerol has more possibilities for hydrogen bonding I believe
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s m e t s n s e e n m saatssess e r s r u s u a m e a em ricburs rubrics citrriitceareiar ltootl R ub r i c s Sarah Jane T isoy Lagata Instructor/ S ci L ab Aide Tasks Give criteria to be used in preparing rubrics Differentiate the different forms of rubrics and Make your own rubric. assessment An information-gathering and a decision making process which includes observing students as they work‚ listening to their answer during discussions and examining the results of the teacher-made
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Chapter 6: Additional Database Objects TRUE/FALSE 1. A sequence serves as a nickname for a database object. ANS: F PTS: 1 REF: 158 2. A database index allows users and application programs to quickly locate specific records. ANS: T PTS: 1 REF: 158 3. A synonym is an alternate name assigned to a database object. ANS: T PTS: 1 REF: 158 4. When a positive value is assigned to the INCREMENT BY clause of the CREATE SEQUENCE command‚ numeric values are generated in descending order. ANS: F
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State Physics • Bonding in solids (metals‚ isolators‚ semiconductors) • Classical free electron theory of metals • Quantum theory of metals • Band theory of solids • Semiconductors • Lasers Classification of solids • Phases of matter: • solid (well defined shape and volume) • liquid (only well defined volume) • gas (no defined shape or volume) • plasma (an overall neutral collection of charged and neutral particles) • Solids • crystalline (atoms form a regular periodic structure) • amorphous (atoms
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Follow These 5 Steps To draw a Lewis dot structure for a molecule or ion‚ follow these steps: •Step 1: Count up the number of valence electrons for each atom‚ and total them up to give the total number of electrons for the molecule. If the molecule is an ion‚ include that charge in the count. For example‚ for a +1 ion‚ subtract one electron‚ and for a -2 ion add two electrons to the total count. (For more information about how to count the number of valence electrons per atom‚ see the related
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Tutorial 1: Atomic Structure and Bonding in Solids 1. (a) Cite the difference between atomic mass and atomic weight. (b) Silicon has three naturally-occurring isotopes as shown in the table below. On the basis of this data‚ confirm that the average atomic weight of Si is 28.0854 amu. |Silicon Isotope |Natural Abundance |Atomic mass of | | | |isotope (amu) | |28Si |92.23 % |27.9769 | |29Si
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chemical properties. There are two main kinds of bonds‚ they ionic and covalent. In bonding the goal of the atoms involved is to reach a level of stability with less energy. In order to reach the epitome of stability‚ as in the case of noble gases‚ an atom strives to complete its outer shell. Either losing or gaining electrons may do this‚ which concludes in an ionic bond or the sharing of electrons with other atoms which makes a covalent bond. Ionic bonds‚ as you can probably surmise form from ions. Ions
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Chapter 6 - Answer Key to Section Review 1-3 Section Review 1 1. What is the main distinction between ionic and covalent bonding? Answer (A): Ionic bonding involves the electrical attraction between large numbers of anions and cations. Covalent bonding involves the sharing of electron pairs between two atoms. Translation: -Ionic bonding happens between a metal and a non-metal (east coast and west coast) -One atom completely donates its valence electrons to another atom -Metals
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Student Name: Melissa Tatum Student ID: 4593119 Date: 7 Dec 2014 Course and Section Number: SCIN131 A004 Fall 14 Lesson 4 Lab: Chromatography and Ionic versus Covalent Bonds PART 1 Begin by viewing the following Thinkwell video 15.1.3 CIA Demonstration: Chromatography After you watch the above video‚ answer the questions below in sufficient detail: (a) (3 pts.) This video discusses 3 different types of chromatography. List each one mentioned‚ and describe their differences in as much detail
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CAREER STUDIES CULMINATING ACTIVITY Rubric for Written Report Student _______________________ Total Marks /100 |Criteria |Level 1 |Level 2 |Level 3 |Level 4 | | |Knowledge/Understanding |Information is gathered and |Information is gathered and |Information is gathered
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