1. Chapter 2 Interactive Quiz
The Chemistry of Life
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2. 1. What three subatomic particles make up atoms?
Electrons, ions, & protons
Neutrons, ions, & electrons
Protons, neutrons & electrons
All of the above
None of the above

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5. 2. How are all of the isotopes of an element similar?
Have the same chemical properties.
Have the same number of electrons
Have the same number of protons
All of the above
None of the above

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8. 3. What are the two main types of chemical bonds?
Ionic and hydrogen
Van der Waals and covalent
Van der Waals and ionic
Ionic and Covalent
All of the above
None of the above

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11. 4. Why are water molecules polar?
The electrons are shared unequally between the oxygen and the hydrogen.
The water molecule is bent.
Oxygen is on one side and hydrogen on the other.
There are more electrons in oxygen than in hydrogen.

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14. 5. What are acidic solutions?
Acidic solutions contain higher concentrations of H+ ions than pure water
Acidic solutions have pH values below 7
Acidic solutions contain lower concentrations of H+ ions than pure water
Acidic solutions have pH values above 7
A & B only
C & D only

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17. 6. Which of these are the functions of lipids ?
Gives the cell energy
Maintains and builds cell membranes
Builds structures within the cell
Runs cell processes
Instructs the cell and maintains genetic material

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20. 7. Which of these are the functions of carbohydrates ?
Gives the cell energy
Maintains and builds cell membranes
Builds structures within the cell
Runs cell processes
Instructs the cell and maintains genetic material

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23. 8. What happens to chemical bonds during chemical reactions?
Bonds never break.
Always involves the breaking of bonds in reactants
Always involves the formation of new bonds in products
B & C only
None of these are right.

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26. 9. How do energy changes affect whether a chemical reaction will occur?
Some reactions absorb energy.
Some reactions release energy.
Reactions that absorb energy need energy to begin the reaction.
Reactions that release energy will react spontaneously.
A & B only
All are correct
None are correct.

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29. 10. Why are enzymes important to living things?
Enzymes lower the activation energy of a reaction.
Some reactions are too slow.
Enzymes speed up chemical reactions in cells.
A & C only
All are correct
None are correct.

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