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Chemical Bonding Quiz #3 (Chemical Reactions)
供稿人: Collins
  • 1. Chemical reactions take place when...
A) small molecules come together
B) large molecules are broken apart
C) none of the answers are correct
D) two of the answers are correct
  • 2. In an exothermic reaction...
A) energy is given off
B) energy is needed
C) two of the answers are correct
D) no answer is c
  • 3. In an endothermic reaction...
A) none of the answers are correct
B) energy is given off
C) energy is needed
D) two of the answers are correct
  • 4. Which of the following is not an example of a chemical reaction?
A) a car rusting
B) baking a cake
C) growing of hair
D) cutting a piece of wood with a saw
  • 5. Oxidation is...
A) a chemical reaction in which an electron is made
B) a chemical reaction in which an electron is destroyed
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
  • 6. Reduction is...
A) a chemical reaction in which an electron is destroyed
B) a chemical reaction in which electrons are transferred to an atom from other elements
C) a chemical reaction in which an atom accepts electrons while combining with 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) depolymerization
C) polymerization
D) solution
  • 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) hydrocarbon
B) acid
C) plastic
D) base
  • 10. This produces hydroxide ions (OH^-)
A) plastic
B) hydrocarbon
C) base
D) acid
  • 11. Which statement(s) are true about the pH scale
A) pure water has 10-7 moles/L of H^+ ions
B) all of the answers are correct
C) bases have more H^+ ions than pure water
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) hydrogen and oxygen
B) carbon and oxygen
C) carbon, oxygen and hydrogen
D) carbon and hydrogen
  • 14. Alkanes are a family of molecules that...
A) two of the answers are correct
B) length and shape affects the melting points
C) are easily burned and used for fuels
D) help in acid and base reactions
  • 15. An isomer is...
A) a different form of an atom
B) none of the answers are correct
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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