Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) small molecules come together
B) large molecules are broken apart
C) none of the answers are correct
D) two of the answers are correct
  • 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) two of the answers are correct
C) none of the answers are correct
D) energy is needed
  • 4. Which of the following is not an example of a chemical reaction?
A) a car rusting
B) baking a cake
C) cutting a piece of wood with a saw
D) growing of hair
  • 5. Oxidation is...
A) a chemical reaction in which an atom accepts electrons while combining with other elements
B) a chemical reaction in which an electron is made
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 an electron is destroyed
B) a chemical reaction in which an electron is made
C) a chemical reaction in which an atom accepts electrons while combining with other elements
D) a chemical reaction in which electrons are transferred to an atom from other elements
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) depolymerization
B) solution
C) precipitation
D) polymerization
  • 8. A salt forms by the neutralization of what?
A) petroleum
B) acids and bases
C) alkanes
D) none of the answers are correct
  • 9. This produces hydrogen ions (H^+)
A) acid
B) hydrocarbon
C) plastic
D) base
  • 10. This produces hydroxide ions (OH^-)
A) hydrocarbon
B) plastic
C) base
D) acid
  • 11. Which statement(s) are true about the pH scale
A) all of the answers are correct
B) pure water has 10-7 moles/L of H^+ ions
C) acids have less H^+ ions pure letter than pure water
D) bases have more H^+ ions than pure water
  • 12. Most large common biological molecules are built by a process called...
A) hydrocarbonization
B) acidic/basic reactions
C) polymerization
D) depolymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and hydrogen
B) hydrogen and oxygen
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) two of the answers are correct
C) are easily burned and used for fuels
D) length and shape affects the melting points
  • 15. An isomer is...
A) a different form of an atom
B) none of the answers are correct
C) a cell that has an equal concentration on the inside as well as the outside of it
D) a molecule that is all by itself
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