Extra Credi Q3

Extra Credi Q3 - Joseph Leonard Green H 3rd quarter extra...

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Joseph Leonard Green H 3 rd quarter extra credit 3/22/09 I. Multiple Choice: Choose the best answer for each of the following. 1. What is a chemical bond? a. a mutual electrical attraction between the nuclei and the valence electrons of different atoms that binds atoms together b. a molecule that has two possible configurations c. the forces of attraction between molecules d. equal and opposite charges which are separated by a short distance 2. The term “molecule” refers to which of the following? a. any group of chemically bonded atoms b. atoms bonded together covalently c. atoms bonded together ionically d. a single atom of an element 3. The chemical symbol ‘ δ ’ (lower case delta) is used to show a. a fractional charge. b. the number of valence electrons c. an ionic bond d. a monatomic ion 4. Individual atoms, when not chemically bonded, are a. very stable. b. at fairly high potential energy. c. at fairly low potential energy. d. so unstable that they may explode. 5. A covalent bond is made up of a. a shared pair of electrons b. two ions c. a single shared electron d. one ion and one neutral atom 6. In a nonpolar covalent bond, a. one atoms loses an electron b. a dipole is formed c. the two atoms are identical d. a dipole-dipole is formed 7. A dipole is formed in a polar covalent bond because a. the two atoms are not identical b. the two atoms have different electronegativities c. the electrons are not shared equally d. all of the above
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8. Bonds that possess between 0% and 5% ionic character are considered to be a. ionic b. polar covalent c. nonpolar covalent d. nonpolar ionic 9. When two atoms form a chemical bond, the new substance a. has a higher potential energy than the reactants. b. is less stable. c. has a lower potential energy than the reactants. d. has the same potential energy as the reactants. 10. A chemical bond that results from the electrical attraction between large numbers of cations and anions is called a(n) a. ionic bond b. polar covalent bond c. nonpolar covalent bond d. metallic bond 11. A chemical bond that results from the sharing of electron pairs between two atoms is called a(n) a. ionic bond b. covalent bond c. hybrid bond d. metallic bond 12. Bonds that possess between 50% and 100% ionic character are considered to be a. ionic b. polar covalent c. nonpolar covalent d. nonpolar ionic 13. The electron configuration of Gallium is 1s²2s²2p 3s²3p 3d¹º4s²4p¹. How many more electrons does nitrogen need to satisfy the octet rule? a. 2 b. 7 c. 5 d. 8 14. The electron configuration of Xenon is 1s²2s²2p 3s²3p 3d¹º4s²4p 4d¹º5s²5p . How many more electrons does nitrogen need to satisfy the octet rule? a.
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This note was uploaded on 12/09/2009 for the course CHEM 204 taught by Professor Donnegan during the Spring '08 term at Alabama.

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Extra Credi Q3 - Joseph Leonard Green H 3rd quarter extra...

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