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Chemical Bonding Quiz #3 (Chemical Reactions)
Katkıları bulunanlar: Collins
  • 1. Chemical reactions take place when...
A) small molecules come together
B) two of the answers are correct
C) large molecules are broken apart
D) none of the answers are correct
  • 2. In an exothermic reaction...
A) energy is given off
B) energy is needed
C) no answer is c
D) two of the answers are correct
  • 3. In an endothermic reaction...
A) energy is given off
B) two of the answers are correct
C) energy is needed
D) none of the answers are correct
  • 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 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
  • 6. Reduction 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 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) depolymerization
B) polymerization
C) precipitation
D) solution
  • 8. A salt forms by the neutralization of what?
A) alkanes
B) none of the answers are correct
C) acids and bases
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) hydrocarbon
B) acid
C) plastic
D) base
  • 10. This produces hydroxide ions (OH^-)
A) hydrocarbon
B) plastic
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) pure water has 10-7 moles/L of H^+ ions
C) all of the answers are correct
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, oxygen and hydrogen
B) carbon and hydrogen
C) carbon and oxygen
D) hydrogen 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 molecule that is all by itself
C) a different form of an atom
D) a cell that has an equal concentration on the inside as well as the outside of it
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