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PS Exam Review Fall 15-16 Chapter 6,7
Contributed by: Conway
  • 1. Typically, atoms gain or lose electrons to achieve
A) an exchange of energy
B) an exchange of energy
C) a stable electron configuration
D) vaporization
  • 2. Often atoms join so that each atom will have
A) an outermost energy level that is full of electrons
B) an even number of electrons
C) more electrons than either protons or neutrons.
D) an equal number of protons and electrons.
  • 3. In an electron dot diagram, the symbol for an element is used to represent
A) the nucleus and all electrons.
B) the nucleus and all non-valence electrons.
C) the nucleus.
D) the nucleus and valence electrons
  • 4. The formation of an ionic bond involves the
A) sharing of electrons.
B) transfer of neutrons.
C) transfer of protons.
D) transfer of electrons.
  • 5. A carbon atom can bond to four other atoms because it has
A) four different cations
B) four valence electrons.
C) no protons in its nucleus.
D) two inner energy levels.
  • 6. The forces that hold different atoms or ions together are
A) physical bonds.
B) nuclear forces.
C) electric currents.
D) chemical bonds.
  • 7. An ionic bond is a bond that forms between
A) one atom’s nucleus and another atom’s electrons.
B) atoms with neutral charges
C) ions with opposite charges
D) the electrons of two different atoms
  • 8. In the compound MgCl2, the subscript 2 indicates that
A) magnesium and chlorine form a double covalent bond.
B) there are two chloride ions for each magnesium ion.
C) there are two magnesium ions for each ion of chlorine
D) the chloride ion is twice the size of the magnesium ion.
  • 9. Each molecule of hydrochloric acid, HCl, contains one atom of hydrogen and
A) one atom of oxygen.
B) one atom of chlorine.
C) two atoms of chlorine
D) two atoms of oxygen.
  • 10. Solid ionic compounds have very high melting points because they
A) contain metallic elements
B) are made of elements that are solid at room temperature.
C) contain charged ions that are locked tightly together
D) are positively charged.
  • 11. Which of the following formulas represents a compound whose molecules contain a triple bond?
A) SO3
B) NN
C) OO
D) O3
  • 12. The elements most likely to form more than one type of ion are the
A) alkaline earth metals
B) halogens.
C) alkali metals.
D) transition metals.
  • 13. Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound?
A) lithium fluorine
B) fluorine lithide
C) lithium fluoride
D) fluorine lithium
  • 14. The name iron(II) indicates that a compound contains
A) two types of iron ions.
B) iron ions with an 11+ charge.
C) iron ions with a 2+ charge.
D) iron ions with a negative charge.
  • 15. Alkali metals, alkaline earth metals, and aluminum all form ions with positive charges equal to the
A) atomic mass
B) period
C) group number
D) atomic number
  • 16. Beryllium, Be, and chlorine, Cl, form a binary ionic compound with a one-to-two ratio of beryllium ions to chloride ions. The formula for the compound is
A) 2BeCl
B) Be2Cl2
C) BeCl2
D) Be2Cl
  • 17. In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains
A) two oxygen atoms
B) an ionic bond
C) two carbon atoms
D) a polyatomic ion
  • 18. Metallic bonding is similar to ionic bonding because
A) there is an attraction between positively charged and negatively charged particles
B) electrons are shared between atoms
C) electrons are transferred between atoms
D) the lattice that forms contains anions and cations
  • 19. Hydrochloric acid, HCl, is added to solid NaOH. After the reaction is complete, NaCl dissolved in water remains. What are the products of this chemical reaction?
A) HCl and NaCl
B) NaCl and H2O
C) NaOH and H2O
D) NaOH and HCl
  • 20. Which of the following is a balanced chemical equation for the synthesis of NaBr from Na and Br2?
A) 2Na + Br2  NaBr
B) Na + Br2  2NaBr
C) Na + Br2  NaBr
D) 2Na + Br2  2NaBr
  • 21. Methane, CH4, burns in oxygen gas to form water and carbon dioxide. What is the correct balanced chemical equation for this reaction? (
A) CH4 + O  H2O + CO2
B) CH4 + 4O  2H2O + CO2
C) CH4 + 2O2  2H2O + CO2
D) CH4 + O2  H2O + CO2
  • 22. Which of the following takes place during a redox reaction?
A) Electrons are lost only
B) Electrons are gained only
C) Electrons are neither gained nor lost
D) Electrons are both gained and lost
  • 23. In a chemical reaction, an iron atom became the ion Fe2+. What happened to the iron atom
A) It gained electrons and was oxidized
B) It lost electrons and was oxidized.
C) It gained electrons and was reduced.
D) It lost electrons and was reduced.
  • 24. In a compound, chemical energy is contained in the
A) bonds.
B) unbonded electrons.
C) movement of the electrons.
D) nuclei of the atoms.
  • 25. Which of the following statements is true about what happens during a chemical reaction
A) Bonds of the reactants are formed, and bonds of the products are broken.
B) Bonds of the reactants are broken, and bonds of the products are formed.
C) The bonds of both the reactants and the products are formed.
D) The bonds of both the reactants and the products are broken.
  • 26. In terms of energy, how would you classify the following chemical reaction? 2Cu + O2  2CuO + 315 kJ
A) exothermic
B) endothermic
C) both endothermic and exothermic
D) neither endothermic nor exothermic
  • 27. For the chemical reaction C2H6 + 137 kJ  C2H4 + H2, the chemical energy of the
A) reaction is conserved.
B) reactant is greater than the chemical energy of the products.
C) products is greater than the chemical energy of the reactant.
D) reactant and the chemical energy of the products are equal
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