1. Define the following terms: * Bonding – the basic link of trust between infant and caretaker. It develops from repeated completions: infant need> crying> rage reaction> parental action to meet need> satisfaction> relaxation. Successful bonding results in an infant acquiring a basic trust in others as responsive‚ in the world as a benign place‚ and in self as able to communicate needs. * Attachment – is defined as a person-specific relationship that is dominated by affectionate interchanges
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Chemical Bonding Chemical compounds are formed by the joining of two or more atoms. A stable compound occurs when the total energy of the combination has lower energy than the separated atoms. The bound state implies a net attractive force between the atoms ... a chemical bond. The two extreme cases of chemical bonds are: Covalent bond: bond in which one or more pairs of electrons are shared by two atoms. Ionic bond: bond in which one or more electrons from one atom are removed and attached to
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Alfredo Brizuela BSC1005 M-F (12-1) Bonding Atoms to Form Molecules 1) Observe a) Atoms bond together to form molecules b) Some molecules are inorganic (non-living). c) Some molecules are organic (are/were living)‚ containing all or part of Mr. Cohn. d) Atoms can bond ionically‚ whereby an atom gives up valence electrons and becomes a + ion‚ and another atom receives those electrons and becomes a – ion. The overall charge on the molecule then becomes zero.
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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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Pg1Pg1 CONSERVATIVE OPERATIVE DENTISTRY Page 1 Lecture: Bonding Systems (Enamel‚ Dentin‚ Compomer‚ Amalgam‚ Resin Cement) OVERVIEW OF BONDING SYSTEMS: A. Goals of Bonding (and Adhesion): 1. Sealing 2. Retention B. Definitions and Terminology for Adhesion: 1. Terminology for adhesion: a. Adhesive- material forming the layer b. Adherend- substrate being bonded c. System (EBS‚ DBS) and agents (EBA‚ DBA‚ ABA)
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Cathy Griffin Dr. Edwards SOC 3413 06 JAN 2012 Bridging and Bonding The greatness of any organization or community is dependent upon the group’s ability to collect‚ accept and utilize inputs from a variety of source. In a small community consideration of all interested parties insures the participation and support when changes are needed. This unity of diverse groups whether social‚ ethnic or cultural for the good of a community is call bridging. Utilizing information gather from multiple
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than van der Waal’s forces. Hydrogen bonding -- When hydrogen is bonded to nitrogen‚ oxygen or fluorine‚ a very strong dipole is formed‚ making the hydrogen very strongly positive. This hydrogen is then attracted to the lone pairs on other similar molecules (nitrogen‚ oxygen and fluorine all have lone pairs) forming a hydrogen bond‚ which is stronger than van der Waal’s or dipole-dipole‚ but weaker than covalent bonding. The effect of hydrogen bonding on intermolecular forces can be demonstrated
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Book Review: Brewster Thomas E.‚ and Elizabeth S. Brewster. Bonding and the Missionary Task: Establishing a Sense of Belonging. Pasadena‚ CA: Lingua House‚ 1982. Tom and Betty Sue Brewster were language/culture learning consultants and faculty members at Fuller Theological Seminary. Prior to that‚ they were missionary language school assistant directors in Mexico‚ and traveled extensively around the world teaching and consulting. Tom was called home to heaven in 1985 and Betty Sue continues
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Structure and bonding Ionic bonds are chemical bonds formed through an electrostatic attraction between two oppositely charged ions. Ionic bonds are formed between an metal and a non-metal. The metal loses an electron or electrons form its highest energy level becoming a positively charged Ion and the non-metal gains an electron or electrons in its highest energy level‚ becoming a negatively charged Ion. Covalent bonds are strong bonds between two non-metal atoms. A covalent bond forms when two
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order to achieve electron stability. When dealing with bond formation (Ionic bonding for example) we need to analyse the outer shell of the atom. Metals usually present 1‚ 2 or 3 electrons in their outer shell therefore they have to give them away to achieve stability. Vice versa non-metals have 5‚ 6 or 7 electrons in their outer shell and they need to receive more electrons in the outer shell to be stable. 1.2 Ionic bonding occurs between metal and non-metal atoms and consists in gaining and losing
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