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Chemical Bonding Quiz #3 (Chemical Reactions)
Contribució de: Collins
  • 1. Chemical reactions take place when...
A) large molecules are broken apart
B) none of the answers are correct
C) two of the answers are correct
D) small molecules come together
  • 2. In an exothermic reaction...
A) energy is needed
B) no answer is c
C) energy is given off
D) two of the answers are correct
  • 3. In an endothermic reaction...
A) two of the answers are correct
B) energy is needed
C) none 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) baking a cake
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 destroyed
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
  • 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) depolymerization
B) polymerization
C) solution
D) precipitation
  • 8. A salt forms by the neutralization of what?
A) alkanes
B) acids and bases
C) none of the answers are correct
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) acid
B) hydrocarbon
C) plastic
D) base
  • 10. This produces hydroxide ions (OH^-)
A) hydrocarbon
B) base
C) acid
D) plastic
  • 11. Which statement(s) are true about the pH scale
A) pure water has 10-7 moles/L of H^+ ions
B) acids have less H^+ ions pure letter than pure water
C) all of the answers are correct
D) bases have more H^+ ions than pure water
  • 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 and oxygen
C) carbon, oxygen and hydrogen
D) carbon and hydrogen
  • 14. Alkanes are a family of molecules that...
A) help in acid and base reactions
B) two of the answers are correct
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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