Chemical Bonding Quiz #3 (Chemical Reactions)
  • 1. Chemical reactions take place when...
A) large molecules are broken apart
B) small molecules come together
C) none of the answers are correct
D) two 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) none of the answers are correct
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) cutting a piece of wood with a saw
B) growing of hair
C) a car rusting
D) baking a cake
  • 5. Oxidation is...
A) a chemical reaction in which an electron is destroyed
B) a chemical reaction in which electrons are transferred to an atom from other elements
C) a chemical reaction in which an atom accepts electrons while combining with other elements
D) a chemical reaction in which an electron is made
  • 6. Reduction is...
A) a chemical reaction in which an electron is destroyed
B) a chemical reaction in which electrons are transferred to an atom from other elements
C) a chemical reaction in which an atom accepts electrons while combining with other elements
D) a chemical reaction in which an electron is made
  • 7. When water (or another liquid) dissolves a solid this is called what type of reaction?
A) polymerization
B) depolymerization
C) precipitation
D) solution
  • 8. A salt forms by the neutralization of what?
A) alkanes
B) acids and bases
C) none of the answers are correct
D) petroleum
  • 9. This produces hydrogen ions (H^+)
A) hydrocarbon
B) acid
C) base
D) plastic
  • 10. This produces hydroxide ions (OH^-)
A) base
B) acid
C) hydrocarbon
D) plastic
  • 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) acids have less H^+ ions pure letter than pure water
D) bases have more H^+ ions than pure water
  • 12. Most large common biological molecules are built by a process called...
A) hydrocarbonization
B) depolymerization
C) acidic/basic reactions
D) polymerization
  • 13. Hydrocarbons are made up of the following elements.
A) carbon and oxygen
B) carbon and hydrogen
C) carbon, oxygen and hydrogen
D) hydrogen and oxygen
  • 14. Alkanes are a family of molecules that...
A) two of the answers are correct
B) are easily burned and used for fuels
C) help in acid and base reactions
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
Učenci, ki so rešili ta test so rešili tudi :

Ustvarjeno z That Quiz — stran z matematičnimi testi za učence za vse stopnje.