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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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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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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Metallic Bonding Metallic Bonding Why do metals conduct electricity? Metals conduct electricity. The delocalised electrons are free to move throughout the structure in 3-dimensions. They can cross grain boundaries. Even though the pattern may be disrupted at the boundary‚ as long as atoms are touching each other‚ the metallic bond is still present. Liquid metals also conduct electricity‚ showing that although the metal atoms may be free to move‚ the delocalisation remains in force until the
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FAMILY BONDING The Norman Rockwell family gathered around the table is an image many know. The whole family happily gathered together in anticipation of a shared meal. In the essay‚ “The Magic of the Family Meal”‚ Nancy Gibbs talks about this dying tradition of sitting down with the family to share in a meal. Life is constantly happening around us and sometimes we don’t take the time to sit and enjoy the company of our family‚ the bonds it can create‚ and the benefit it can have on children. Sitting
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Interatomic Bonding Tutorial Suggested Solutions 1. |Substances |Type of bonding |Type of structure | |H2O |Covalent |Simple molecular | |SiCl4 |covalent |simple molecular | |RbCl |ionic |giant lattice/ionic | |Si |covalent
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Chemistry A Bonding Worksheet #1: Introduction to Ionic Bonds The forces that hold matter together are called chemical bonds. There are four major types of bonds. We need to learn in detail about these bonds and how they influence the properties of matter. The four major types of bonds are: I. Ionic Bonds III. Metallic Bonds II. Covalent Bonds IV. Intermolecular (van der Waals) forces Ionic Bonds The ionic bond is formed by the attraction between oppositely charged ions.
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Physics 215 Winter 2002 Introduction to Modern Physics Prof. Ioan Kosztin Lecture #23 Solid 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
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Assessment 1) Describe the difference between ionic and covalent bond. Ionic bonds have electrostatic forces that hold cations and anions together‚ and are electronic neutral. Covalent bonds are bonds that don’t give or take any electrons. In stead they share the elctrons 50) Which of these compounds contain elements that do not follow the octet rule? Explain. a) NF3: 5 + (7*3) = 26 b) PCl2F3: 5 + (7*2) + (7*3) = 40 c) SF4: 6 + (7 *4) = 24 d) SCl2: 6 + (7*2) = 20 The answer is “d”
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Josh Nersissian Mrs. Kolus English‚ Pd. 3 11 September 2012 Native American Mascots Redskins‚ Braves‚ Indians‚ and Chiefs; they’re just mascot names not racist remarks. People find using these names as team mascots derogatory and insulting. Others don’t mind it‚ they think of it as tradition and don’t want the names removed. On the contrary‚ Native American Mascots being used in sports teams is considered disrespect to several. This should not be an issue because they do not ridicule
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