words to describe each type of bonding: Ionic Fill in this table: Ionic Compound Ratio of ions in compound Sodium chloride Na+ : Cl1:1 Magnesium oxide Formula of compound Covalent MgO Ca2+: Cl1:2 CaCl2 Metallic Fill in this table of more complicated ions: Name of ion Formula of ion Calcium hydroxide‚ Ca(OH)2 hydroxide NO3CO32Suphate Example of compound Mg(NO3)2 Sodium carbonate CaSO4 KEY WORDS: Electronic structure Covalent bonding Ionic bonding Proton Electron Ion Giant structure
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Investigation 7: How Can The Waste Be Made Useful? February 20‚ 2014 Mian Yang Tuesday 8:30am Group #6 Steven Hengen‚ Joe Wahl‚ Colleen Strom‚ Nicole D Introduction: Chemical interactions can often lead to the production of environmentally unsafe byproducts. If the byproducts have no use‚ they are disposed as waste. Waste disposal companies make profit by collecting and disposing large amounts of these unused byproducts. These companies often concentrate the byproduct solutions so that they
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following questions in your own words‚ using complete sentences. Based on your observations in the lab‚ categorize each unidentified compound as ionic or covalent. Explain in one or two sentences why you categorized the compounds the way that you did. (5 points) Based on my observations in the lab I categorized Substance A and Substance C as an ionic bonds because the solids don‘t conduct electricity but when in liquid state and aqueous solutions‚ electricity was conducted. I categorized substances
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of a book or article) that you used to help you answer the question. 1. Which type of compound usually has higher melting points‚ ionic compounds or covalent compounds? What is the reason for this difference in melting points? (3 points) 2. Do ionic compounds conduct electricity as: (3 points) a. Solids? b. Liquids? c. Aqueous solutions (when the ionic compounds are dissolved in water)? 3. Do covalent compounds conduct electricity as: (3 points) a. Solids? b. Liquids? c. Aqueous
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very‚ very polar. It is the latter which take on some of the characteristics of an ionic bond. The ionic and covalent bonds are known to be the strongest chemical bonds. An ionic bond forms when two atoms differ so much in electronegativity that one or more electrons are actually transferred from one atom to the other. Ionic bonds generally occur between a metal and a nonmetal. Due to the existence of ionic bonds‚ elements that normally would not combine because sharing electrons is either
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8.2 Chemical Earth 8.2.1 The living and non-living components of the Earth contain mixtures * Construct word and balanced formulae equations of chemical reactions as they are encountered Combustion reaction (burning) element + oxygen → oxide e.g. 4Na (S) + O2 (g) → Na2O (s) Reaction with hydrogen element + hydrogen → hydride e.g. Ca (s) + H2 (g) → CaH2 (s) Reaction between an oxide and water metallic oxide + water → hydroxide * metallic oxide is also known as “basic oxide” e.g
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Chapter 7 Matching Match each item with the correct statement below. a. halide ion e. valence electron b. octet rule f. coordination number c. ionic bond g. metallic bond d. electron dot structure ____ 1. an electron in the highest occupied energy level of an atom ____ 2. Atoms react so as to acquire the stable electron structure of a noble gas. ____ 3. a depiction of valence electrons around the symbol of an element ____ 4. an anion of chlorine or other halogen ____ 5. the force of attraction
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caused by the electrostatic force of attraction between opposite charges‚ either between electrons and nuclei‚ or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are "strong bonds" such ascovalent or ionic bonds and "weak bonds" such as dipole–dipole interactions‚ the London dispersion force and hydrogen bonding. Since opposite charges attract via a simple electromagnetic force‚ the negatively charged electrons that are orbiting the nucleus and the
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CaCl2 (aq) + NaPO4 (aq) Ca3(PO4)2 (s) + 6NaCl (aq) Ionic equation: 3Ca2+(aq) + 6Cl-(aq) + 6Na+(aq) + 2PO43- (aq) Ca3(PO4)2 (s) + 6Na+ (aq) + 6Cl- (aq) Net ionic equation: 3Ca2+ (aq) + 2PO43- (aq) Ca3(PO4)2 (s) b. Na2SO (aq) + Cu(NO3)2 (aq) NO REACTION c. Balanced: 2AgNO3 (aq) + CaCl2 (aq) 2AgCl (s) + Ca(NO3)2 (aq) Ionic equation: 2Ag+ (aq) + 2NO3- (aq) + Ca2+ (aq) + 2Cl- (aq) 2AgCl (s) + Ca2+ (aq) + 2NO3- (aq) Net ionic equation: 2Ag+ (aq) + 2Cl- (aq) 2AgCl (s) d
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Ch1: Atomic structure Discovering the electron - When electricity flows in an aqueous solution of ionic compounds‚ the metal ions appears at the negative electrode (cathode). - The metal exists in the solution as positively charged particles known as ions. - A 1+ ion plus one unit of electricity gives one metal atom. - Low pressures gases conduct electricity very well. - The glass of containing vessel opposite the cathode (negatives electrode) glowed when the applied potential difference
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