Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) small molecules come together
B) none of the answers are correct
C) large molecules are broken apart
D) two of the answers are correct
  • 2. In an exothermic reaction...
A) two of the answers are correct
B) energy is given off
C) energy is needed
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) cutting a piece of wood with a saw
B) growing of hair
C) baking a cake
D) a car rusting
  • 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 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 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
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) precipitation
B) polymerization
C) depolymerization
D) solution
  • 8. A salt forms by the neutralization of what?
A) none of the answers are correct
B) alkanes
C) acids and bases
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) plastic
B) hydrocarbon
C) acid
D) base
  • 10. This produces hydroxide ions (OH^-)
A) acid
B) hydrocarbon
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) acids have less H^+ ions pure letter than pure water
D) pure water has 10-7 moles/L of H^+ ions
  • 12. Most large common biological molecules are built by a process called...
A) acidic/basic reactions
B) depolymerization
C) hydrocarbonization
D) polymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and hydrogen
B) carbon, oxygen and hydrogen
C) carbon and oxygen
D) hydrogen and oxygen
  • 14. Alkanes are a family of molecules that...
A) two of the answers are correct
B) help in acid and base reactions
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) a cell that has an equal concentration on the inside as well as the outside of it
C) a molecule that is all by itself
D) none of the answers are correct
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