Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) two of the answers are correct
B) large molecules are broken apart
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 needed
C) no answer is c
D) energy is given off
  • 3. In an endothermic reaction...
A) two of the answers are correct
B) energy is needed
C) energy is given off
D) none 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) baking a cake
D) a car rusting
  • 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 destroyed
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
  • 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) polymerization
B) solution
C) precipitation
D) depolymerization
  • 8. A salt forms by the neutralization of what?
A) alkanes
B) none of the answers are correct
C) petroleum
D) acids and bases
  • 9. This produces hydrogen ions (H^+)
A) base
B) plastic
C) hydrocarbon
D) acid
  • 10. This produces hydroxide ions (OH^-)
A) plastic
B) base
C) acid
D) hydrocarbon
  • 11. Which statement(s) are true about the pH scale
A) bases have more H^+ ions than pure water
B) pure water has 10-7 moles/L of H^+ ions
C) all of the answers are correct
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) acidic/basic reactions
C) hydrocarbonization
D) polymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and hydrogen
B) carbon and oxygen
C) hydrogen and oxygen
D) carbon, oxygen and hydrogen
  • 14. Alkanes are a family of molecules that...
A) are easily burned and used for fuels
B) length and shape affects the melting points
C) two of the answers are correct
D) help in acid and base reactions
  • 15. An isomer is...
A) a molecule that is all by itself
B) a different form of an atom
C) none of the answers are correct
D) a cell that has an equal concentration on the inside as well as the outside of it
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