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Chemical Bonding Quiz #3 (Chemical Reactions)
Συνεισφορά από: Collins
  • 1. Chemical reactions take place when...
A) small molecules come together
B) large molecules are broken apart
C) two of the answers are correct
D) none of the answers are correct
  • 2. In an exothermic reaction...
A) energy is needed
B) two of the answers are correct
C) energy is given off
D) no answer is c
  • 3. In an endothermic reaction...
A) energy is given off
B) energy is needed
C) none of the answers are correct
D) two of the answers are correct
  • 4. Which of the following is not an example of a chemical reaction?
A) baking a cake
B) cutting a piece of wood with a saw
C) a car rusting
D) growing of hair
  • 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 atom accepts electrons while combining with other elements
C) a chemical reaction in which an electron is destroyed
D) a chemical reaction in which an electron is made
  • 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 electron is made
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
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) depolymerization
B) solution
C) polymerization
D) precipitation
  • 8. A salt forms by the neutralization of what?
A) acids and bases
B) none of the answers are correct
C) petroleum
D) alkanes
  • 9. This produces hydrogen ions (H^+)
A) acid
B) hydrocarbon
C) plastic
D) base
  • 10. This produces hydroxide ions (OH^-)
A) plastic
B) base
C) hydrocarbon
D) acid
  • 11. Which statement(s) are true about the pH scale
A) bases have more H^+ ions than pure water
B) pure water has 10-7 moles/L of H^+ ions
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) acidic/basic reactions
C) polymerization
D) depolymerization
  • 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) are easily burned and used for fuels
B) help in acid and base reactions
C) two of the answers are correct
D) length and shape affects the melting points
  • 15. An isomer is...
A) none of the answers are correct
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) a molecule that is all by itself
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