7 Which of the following elements will have the fastest chemical reaction? A. Na B. Al C. Si D. P 8 Which of the following elements will have the fastest chemical reaction? A. I B. Br C. CI D. F Which of the following element's atoms will NOT have an octet of electrons when 9 the atom is ionized? A. Li B. Na C. K D. Rb 10 What is the octet rule? A. All atoms when they chemically react will have only 8 electrons after the reaction is completed. B. Most atoms when they chemically react will try to have 8 valence electrons after the reaction is completed. C. Most atoms when they chemically react will give 8 valence electrons to another atom. D. Most atoms when they chemically react will take 8 valence electrons from another atom. BLIVEWORKSHEETS

7 Which of the following elements will have the fastest chemical reaction? A. Na B. Al C. Si D. P 8 Which of the following elements will have the fastest chemical reaction? A. I B. Br C. CI D. F Which of the following element's atoms will NOT have an octet of electrons when 9 the atom is ionized? A. Li B. Na C. K D. Rb 10 What is the octet rule? A. All atoms when they chemically react will have only 8 electrons after the reaction is completed. B. Most atoms when they chemically react will try to have 8 valence electrons after the reaction is completed. C. Most atoms when they chemically react will give 8 valence electrons to another atom. D. Most atoms when they chemically react will take 8 valence electrons from another atom. BLIVEWORKSHEETS

Living by Chemistry

2nd Edition

ISBN:9781464142314

Author:Angelica M. Stacy

Publisher:Angelica M. Stacy

ChapterU2: Smells: Molecular Structure And Properties

Section: Chapter Questions

Problem 3STP

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Think of forming an ionic compound as three steps (this is a simplification, as with all models): (I) removing an electron from the metal; (2) adding an electron to the nonmetal; and (3) allowing the metal cation and nonmetal anion to come together. a. What is the sign of the energy change for each of these three processes? b. In general, what is the sign of the sum of the first two processes? Use examples to support your answer. c. What must be the sign of the sum of the three process d. Given your answer to part c, why do ionic bonds occur? e. Given your above explanations, why is NaCl stable but not Na2Cl? NaCl2? What about MgO compared to MgO2? Mg2O?
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hat does temperature measure? Are the molecules in a beaker of warm water moving at the same speed as the molecules in a beaker of cold water? Explain? What is heat? Is heat the same as temperature?
rite the Lewis structure for each of the following atoms. msp;a.He(Z=2)d.Ne(Z=10)b.Br(Z=35)e.I(Z=53)c.Sr(Z=38)f.Ra(Z=88)
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Compare your answers from parts a and b of Exercise 69 of Chapter 3 with H values calculated for each reaction using standard enthalpies of formation in Appendix 4. Do enthalpy changes calculated from bond energies give a reasonable estimate of the actual values?