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