<p> Leader: Tina Exam 3 Mini Review: Course: Chem177 Supplemental Instruction Instructor: Dr. Appy Iowa State University Date: April 2</p><p>1) Which property best distinguishes metals from other types of solids?</p><p> a) Metals exhibit three dimensional order. b) Metals melt at low temperatures c) Metals have a shiny, silvery-white appearance d) Metals exhibit three-dimensional electrical conductivity</p><p>2) What type of solid is silicon carbide? SiC a) Ionic b) Metallic c) Molecular d) Covalent</p><p>3) Which property of the oxygen atom is represented by the equation O(g) + e- → O- (g)?</p><p> a) Electronegativity b) First electron affinity c) First ionization energy e) Lattice Energy</p><p>4) Which of the following isoelectronic species has the largest radius? a) K+ b) Ca2+ c) P3- d) S2-</p><p>5) Which group best illustrates the transition from non-metallic to metallic behavious with increasing atomic number? a) Be, Mg, Ca, Sr b) N, P, As, Sb c) F, Cl, Br, I d) Fe, Ru, Os, Hs</p><p>6) Which atom is least likely to violate the octet rule in it compounds? a) B b) Cl c) F d) H</p><p>7) Which ionic compound has the largest lattice energy? a) LiF b) Beo c) KBr d) Cas</p><p>8) In the Lewis structure of Formic acid, HCOOH, how many bonding pairs and lone pairs of electrons are present? a) 4 bonding, 2 lone b) 4 bonding, 5 lone c) 5 bonding, 0 lone d) 5 bonding, 4 lone</p><p>9) When 1.0 mole of H2O2 decomposes to form H2O and O2, 103 kJ of energy is released. Given the bond energies below, what is the bond energy of the O-O </p><p> single bond in H2O2? Bond H-O O=O Bond Energy (kJ/mol) +463 +498 a) +395 kJ/mol b) +249 kJ/mol c) +146 kJ/mol d) +103 kJ/mol</p><p>References: http://www.acs.org/content/dam/acsorg/education/students/highschool/olympiad/pastexams/201 4-usnco-local-exam.pdf</p>