Chem_2_2008_Summer_1 - Name Chemistry 2 Chapters 1-5 and...

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1 Name _______________________________ Chemistry 2 Exam 1 Chapters 1-5 and part 6 Summer 2008 Answer the following by writing the word, words, letter, letters or number in each blank that best completes each sentence. (3/4 point each) 1. A(n) ______________________ is a substance that cannot be chemically converted into simpler substances. It is a substance in which all of the atoms have the same number of protons and therefore the same chemical characteristics. 2. ______________________ means capable of being extended or shaped by the blows of a hammer. 3. The ______________________ are the elements in groups 3 through 12 (the “B” groups) on the periodic table. 4. A(n) ______________________ is an ion formed from an atom that has lost one or more electrons and thus has become positively charged. 5. ______________________ are atoms that have the same number of protons but different numbers of neutrons. They have the same atomic number but different mass numbers. 6. ______________________ energy is the capacity to do work due to the motion of an object. 7. ______________________ energy is retrievable, stored form of energy an object possesses by virtue of its position or state. 8. A(n) ______________________ change releases energy. 9. ______________________ is the accepted international unit for energy. 10. ______________________ is the energy transferred from a region of higher temperature to a region of lower temperature due to collisions between particles. 11. ______________________ are the allowed waveforms for the electron. This term can also be defined as a volume that contains a high percentage of the electron charge or as a volume within which an electron has a high probability of being found.
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2 12. A(n) ______________________ is the condition of an atom that has at least one of its electrons in orbitals that do not represent the lowest possible potential energy. 13. A(n) ______________________ is a covalent bond in which electrons are shared unequally , leading to a partial negative charge on the atom that attracts the electrons more and to a partial positive charge on the other atom. 14. ______________________ are compounds that contain only carbon and hydrogen. 15. ______________________ are compounds that have the same molecular formula but different molecular structures. 16. ______________________ is the weighted average of the masses of the naturally occurring isotopes of an element. 17. A(n) ______________________ is the amount of substance that contains the same number of particles as there are atoms in 12 g of carbon-12. Answer the following by writing one of these words or phrases in each blank.
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This note was uploaded on 03/03/2012 for the course CHEM 100 taught by Professor Mark during the Fall '06 term at Monterey Peninsula College.

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Chem_2_2008_Summer_1 - Name Chemistry 2 Chapters 1-5 and...

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