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Chemical Bonding Quiz #3 (Chemical Reactions)
Beigesteuert von: Collins
  • 1. Chemical reactions take place when...
A) two of the answers are correct
B) none of the answers are correct
C) small molecules come together
D) large molecules are broken apart
  • 2. In an exothermic reaction...
A) no answer is c
B) energy is needed
C) energy is given off
D) two of the answers are correct
  • 3. In an endothermic reaction...
A) energy is given off
B) none of the answers are correct
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) cutting a piece of wood with a saw
B) baking a cake
C) a car rusting
D) growing of hair
  • 5. Oxidation is...
A) a chemical reaction in which an electron is destroyed
B) a chemical reaction in which an atom accepts electrons while combining with other elements
C) a chemical reaction in which an electron is made
D) a chemical reaction in which electrons are transferred to an atom from other elements
  • 6. Reduction is...
A) a chemical reaction in which electrons are transferred to an atom from other elements
B) a chemical reaction in which an atom accepts electrons while combining with other elements
C) a chemical reaction in which an electron is made
D) a chemical reaction in which an electron is destroyed
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) depolymerization
B) precipitation
C) polymerization
D) solution
  • 8. A salt forms by the neutralization of what?
A) alkanes
B) none of the answers are correct
C) acids and bases
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) base
B) plastic
C) hydrocarbon
D) acid
  • 10. This produces hydroxide ions (OH^-)
A) base
B) acid
C) plastic
D) hydrocarbon
  • 11. Which statement(s) are true about the pH scale
A) all of the answers are correct
B) acids have less H^+ ions pure letter than pure water
C) pure water has 10-7 moles/L of H^+ ions
D) bases have more H^+ ions than pure water
  • 12. Most large common biological molecules are built by a process called...
A) polymerization
B) depolymerization
C) acidic/basic reactions
D) hydrocarbonization
  • 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) 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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