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