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) large molecules are broken apart
D) two of the answers are correct
  • 2. In an exothermic reaction...
A) energy is given off
B) no answer is c
C) energy is needed
D) two of the answers are correct
  • 3. In an endothermic reaction...
A) none of the answers are correct
B) energy is needed
C) two of the answers are correct
D) energy is given off
  • 4. Which of the following is not an example of a chemical reaction?
A) a car rusting
B) growing of hair
C) cutting a piece of wood with a saw
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 electrons are transferred to an atom from 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 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
  • 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) none of the answers are correct
B) petroleum
C) acids and bases
D) alkanes
  • 9. This produces hydrogen ions (H^+)
A) acid
B) plastic
C) base
D) hydrocarbon
  • 10. This produces hydroxide ions (OH^-)
A) base
B) plastic
C) acid
D) hydrocarbon
  • 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) all of the answers are correct
D) pure water has 10-7 moles/L of H^+ ions
  • 12. Most large common biological molecules are built by a process called...
A) polymerization
B) hydrocarbonization
C) acidic/basic reactions
D) depolymerization
  • 13. Hydrocarbons are made up of the following elements.
A) hydrogen and oxygen
B) carbon, oxygen and hydrogen
C) carbon 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) are easily burned and used for fuels
D) two of the answers are correct
  • 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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