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Chemical Bonding Quiz #3 (Chemical Reactions)
أسهم بواسطة: Collins
  • 1. Chemical reactions take place when...
A) small molecules come together
B) large molecules are broken apart
C) none of the answers are correct
D) two of the answers are correct
  • 2. In an exothermic reaction...
A) two of the answers are correct
B) energy is needed
C) no answer is c
D) energy is given off
  • 3. In an endothermic reaction...
A) energy is needed
B) two of the answers are correct
C) none 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) cutting a piece of wood with a saw
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 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 an electron is made
B) a chemical reaction in which an electron is destroyed
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) polymerization
B) solution
C) precipitation
D) depolymerization
  • 8. A salt forms by the neutralization of what?
A) petroleum
B) acids and bases
C) none of the answers are correct
D) alkanes
  • 9. This produces hydrogen ions (H^+)
A) plastic
B) acid
C) base
D) hydrocarbon
  • 10. This produces hydroxide ions (OH^-)
A) acid
B) plastic
C) hydrocarbon
D) base
  • 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) all of the answers are correct
D) acids have less H^+ ions pure letter than pure water
  • 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 oxygen
B) hydrogen and oxygen
C) carbon, oxygen and hydrogen
D) carbon and hydrogen
  • 14. Alkanes are a family of molecules that...
A) are easily burned and used for fuels
B) two of the answers are correct
C) help in acid and base reactions
D) length and shape affects the melting points
  • 15. An isomer is...
A) a cell that has an equal concentration on the inside as well as the outside of it
B) none of the answers are correct
C) a molecule that is all by itself
D) a different form of an atom
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