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Chemical Bonding Quiz #3 (Chemical Reactions)
Contribució de: Collins
  • 1. Chemical reactions take place when...
A) two of the answers are correct
B) small molecules come together
C) large molecules are broken apart
D) none of the answers are correct
  • 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) none of the answers are correct
B) energy is given off
C) two of the answers are correct
D) energy is needed
  • 4. Which of the following is not an example of a chemical reaction?
A) baking a cake
B) a car rusting
C) cutting a piece of wood with a saw
D) growing of hair
  • 5. Oxidation is...
A) a chemical reaction in which an atom accepts electrons while combining with other elements
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 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 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) polymerization
B) solution
C) precipitation
D) depolymerization
  • 8. A salt forms by the neutralization of what?
A) acids and bases
B) petroleum
C) none of the answers are correct
D) alkanes
  • 9. This produces hydrogen ions (H^+)
A) base
B) plastic
C) acid
D) hydrocarbon
  • 10. This produces hydroxide ions (OH^-)
A) plastic
B) hydrocarbon
C) acid
D) base
  • 11. Which statement(s) are true about the pH scale
A) acids have less H^+ ions pure letter than pure water
B) all of the answers are correct
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) acidic/basic reactions
B) hydrocarbonization
C) polymerization
D) depolymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and oxygen
B) carbon, oxygen and hydrogen
C) carbon and hydrogen
D) hydrogen and oxygen
  • 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 cell that has an equal concentration on the inside as well as the outside of it
B) a different form of an atom
C) none of the answers are correct
D) a molecule that is all by itself
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