OAT Domain 1.2: Survey of the Natural Sciences, General Chemistry Welcome to your OAT Domain 1.2: Survey of the Natural Sciences, General Chemistry 1. OAT: Survey of the Natural Sciences, General Chemistry What is the molecular geometry of a molecule with a central atom that has two lone pairs and two bond pairs? Linear Bent Tetrahedral Trigonal planar None 2. OAT: Survey of the Natural Sciences, General Chemistry Which of the following conditions represents an increase in entropy? Freezing of water Condensation of steam Sublimation of dry ice Deposition of water vapor None 3. OAT: Survey of the Natural Sciences, General Chemistry What is the final electron acceptor in the electron transport chain of aerobic respiration? NAD+ FAD Oxygen Carbon dioxide None 4. OAT: Survey of the Natural Sciences, General Chemistry In a redox reaction, the element that is oxidized will show a change in oxidation state that is: A decrease An increase No change Periodic None 5. OAT: Survey of the Natural Sciences, General Chemistry Which compound exhibits the highest boiling point? CH4 NH3 H2O HF None 6. OAT: Survey of the Natural Sciences, General Chemistry Which of the following is not a characteristic of a catalyst? Lowers the activation energy of a reaction Is consumed by the reaction Provides an alternative pathway for the reaction Does not shift the position of equilibrium None 7. OAT: Survey of the Natural Sciences, General Chemistry In which type of crystal lattice are the lattice points occupied by anions, and cations occupy the holes between them? Molecular crystal Covalent crystal Metallic crystal Ionic crystal None 8. OAT: Survey of the Natural Sciences, General Chemistry The half-life of a first-order reaction is independent of which of the following? Reaction order Initial concentration Activation energy Temperature None 9. OAT: Survey of the Natural Sciences, General Chemistry A buffer solution is prepared by mixing equal molar amounts of acetic acid and sodium acetate. What is the pH of this buffer if the pKa of acetic acid is 4.76? 4.76 5.76 3.76 7 None 10. OAT: Survey of the Natural Sciences, General Chemistry The Nernst equation is used to calculate the electrode potential under non-standard conditions. Which factor does not appear in the Nernst equation? Gas constant (R) Temperature (T) Faraday's constant (F) Catalyst None 11. OAT: Survey of the Natural Sciences, General Chemistry When silver nitrate solution is mixed with potassium chloride solution, what type of reaction occurs? Synthesis Decomposition Single displacement Double displacement None 12. OAT: Survey of the Natural Sciences, General Chemistry Which element commonly forms an amphoteric oxide? Sodium Magnesium Aluminum Potassium None 13. OAT: Survey of the Natural Sciences, General Chemistry What is the oxidation state of chromium in the dichromate ion, Cr2O7^2-? 3 6 7 12 None 14. OAT: Survey of the Natural Sciences, General Chemistry Which of the following is not true about sigma bonds? Formed by the end-to-end overlap of orbitals They are the first bonds formed between two atoms Allow for free rotation around the bond axis They are weaker than pi bonds None 15. OAT: Survey of the Natural Sciences, General Chemistry What is the main product of the reaction between benzene and methyl chloride in the presence of AlCl3? Toluene Benzyl chloride Chlorobenzene Anisole None 16. OAT: Survey of the Natural Sciences, General Chemistry Which of the following molecules is polar? CO2 CH4 BF3 NH3 None 17. OAT: Survey of the Natural Sciences, General Chemistry The rate law for a reaction is given as rate = k[A]^2[B]. What is the order of the reaction with respect to reactant A? Zeroth First Second Third None 18. OAT: Survey of the Natural Sciences, General Chemistry Which type of intermolecular force is primarily responsible for the high boiling point of water? London dispersion forces Dipole-dipole interactions Hydrogen bonding Ionic bonding None 19. OAT: Survey of the Natural Sciences, General Chemistry What is the final electron acceptor in the electron transport chain of aerobic respiration? NAD+ FAD Oxygen Carbon dioxide None 20. OAT: Survey of the Natural Sciences, General Chemistry Which of the following is not true about sigma bonds? Formed by the end-to-end overlap of orbitals They are the first bonds formed between two atoms Allow for free rotation around the bond axis They are weaker than pi bonds None 1 out of 20 Time is Up! Time's up
