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Chemical Bonding Quiz #3 (Chemical Reactions)
Contribué par: Collins
  • 1. Chemical reactions take place when...
A) two of the answers are correct
B) none of the answers are correct
C) large molecules are broken apart
D) small molecules come together
  • 2. In an exothermic reaction...
A) energy is given off
B) no answer is c
C) two of the answers are correct
D) energy is needed
  • 3. In an endothermic reaction...
A) energy is needed
B) none of the answers are correct
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) growing of hair
B) a car rusting
C) baking a cake
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 electrons are transferred to an atom from other elements
C) a chemical reaction in which an electron is destroyed
D) a chemical reaction in which an atom accepts electrons while combining with 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 electron is made
D) a chemical reaction in which an atom accepts electrons while combining with other elements
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) solution
B) depolymerization
C) polymerization
D) precipitation
  • 8. A salt forms by the neutralization of what?
A) petroleum
B) acids and bases
C) alkanes
D) none of the answers are correct
  • 9. This produces hydrogen ions (H^+)
A) hydrocarbon
B) base
C) plastic
D) acid
  • 10. This produces hydroxide ions (OH^-)
A) acid
B) base
C) plastic
D) hydrocarbon
  • 11. Which statement(s) are true about the pH scale
A) pure water has 10-7 moles/L of H^+ ions
B) bases have more H^+ ions than pure water
C) acids have less H^+ ions pure letter than pure water
D) all of the answers are correct
  • 12. Most large common biological molecules are built by a process called...
A) hydrocarbonization
B) depolymerization
C) acidic/basic reactions
D) polymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and hydrogen
B) carbon, oxygen and hydrogen
C) hydrogen and oxygen
D) carbon and oxygen
  • 14. Alkanes are a family of molecules that...
A) length and shape affects the melting points
B) two of the answers are correct
C) are easily burned and used for fuels
D) help in acid and base reactions
  • 15. An isomer is...
A) a molecule that is all by itself
B) a cell that has an equal concentration on the inside as well as the outside of it
C) a different form of an atom
D) none of the answers are correct
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