Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) large molecules are broken apart
B) two of the answers are correct
C) small molecules come together
D) none of the answers are correct
  • 2. In an exothermic reaction...
A) two of the answers are correct
B) energy is given off
C) no answer is c
D) energy is needed
  • 3. In an endothermic reaction...
A) energy is given off
B) energy is needed
C) none of the answers are correct
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) baking a cake
C) a car rusting
D) cutting a piece of wood with a saw
  • 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 electron is made
C) a chemical reaction in which an atom accepts electrons while combining with other elements
D) a chemical reaction in which an electron is destroyed
  • 6. Reduction is...
A) a chemical reaction in which an electron is made
B) a chemical reaction in which electrons are transferred to an atom from other elements
C) a chemical reaction in which an electron is destroyed
D) a chemical reaction in which an atom accepts electrons while combining with other elements
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) solution
B) depolymerization
C) polymerization
D) precipitation
  • 8. A salt forms by the neutralization of what?
A) acids and bases
B) none of the answers are correct
C) alkanes
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) plastic
B) hydrocarbon
C) acid
D) base
  • 10. This produces hydroxide ions (OH^-)
A) hydrocarbon
B) acid
C) base
D) plastic
  • 11. Which statement(s) are true about the pH scale
A) all of the answers are correct
B) bases have more H^+ ions than pure water
C) pure water has 10-7 moles/L of H^+ ions
D) acids have less H^+ ions pure letter than pure water
  • 12. Most large common biological molecules are built by a process called...
A) depolymerization
B) hydrocarbonization
C) polymerization
D) acidic/basic reactions
  • 13. Hydrocarbons are made up of the following elements.
A) carbon, oxygen and hydrogen
B) carbon and hydrogen
C) hydrogen and oxygen
D) carbon and oxygen
  • 14. Alkanes are a family of molecules that...
A) are easily burned and used for fuels
B) help in acid and base reactions
C) two of the answers are correct
D) length and shape affects the melting points
  • 15. An isomer is...
A) none of the answers are correct
B) a different form of an atom
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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