Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) small molecules come together
B) none of the answers are correct
C) two of the answers are correct
D) large molecules are broken apart
  • 2. In an exothermic reaction...
A) energy is needed
B) energy is given off
C) two of the answers are correct
D) no answer is c
  • 3. In an endothermic reaction...
A) energy is given off
B) none of the answers are correct
C) energy is needed
D) two of the answers are correct
  • 4. Which of the following is not an example of a chemical reaction?
A) growing of hair
B) cutting a piece of wood with a saw
C) a car rusting
D) baking a cake
  • 5. Oxidation is...
A) a chemical reaction in which an electron is made
B) a chemical reaction in which an atom accepts electrons while combining with other elements
C) a chemical reaction in which an electron is destroyed
D) a chemical reaction in which electrons are transferred to an atom from other elements
  • 6. Reduction is...
A) a chemical reaction in which electrons are transferred to an atom from other elements
B) a chemical reaction in which an atom accepts electrons while combining with other elements
C) a chemical reaction in which an electron is made
D) a chemical reaction in which an electron is destroyed
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) solution
B) precipitation
C) depolymerization
D) polymerization
  • 8. A salt forms by the neutralization of what?
A) acids and bases
B) alkanes
C) none of the answers are correct
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) base
B) acid
C) plastic
D) hydrocarbon
  • 10. This produces hydroxide ions (OH^-)
A) hydrocarbon
B) base
C) plastic
D) acid
  • 11. Which statement(s) are true about the pH scale
A) pure water has 10-7 moles/L of H^+ ions
B) acids have less H^+ ions pure letter than pure water
C) bases have more H^+ ions than pure water
D) all of the answers are correct
  • 12. Most large common biological molecules are built by a process called...
A) polymerization
B) depolymerization
C) hydrocarbonization
D) acidic/basic reactions
  • 13. Hydrocarbons are made up of the following elements.
A) hydrogen and oxygen
B) carbon and hydrogen
C) carbon, oxygen and hydrogen
D) carbon and oxygen
  • 14. Alkanes are a family of molecules that...
A) help in acid and base reactions
B) length and shape affects the melting points
C) two of the answers are correct
D) are easily burned and used for fuels
  • 15. An isomer is...
A) a different form of an atom
B) none of the answers are correct
C) a molecule that is all by itself
D) a cell that has an equal concentration on the inside as well as the outside of it
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