Chapter 2 Review


1.      Name the three subatomic particle of an atom and give their charge.  Which two are found in the nucleus?  Which one is found in the energy shells?


2.      What is an atom?  What is a compound?




3.      What does it mean for an atom to be stable?  Name three ways atoms can become stable.



4.      State the Octet Rule.



5.      What type of electrons are used to make a chemical bond?



6.      What is an ion?



7.      What is an ionic bond?  Covalent bond?



8.      What holds an ionic bond together?



9.      What holds a covalent bond together?



10.  Which type of bond (ionic or covalent) is stronger in water? Out of water?



11.  Which type of bond (ionic or covalent) conducts electricity when in water?



12.  What does polar mean?  What makes molecules polar?



13.  Why is polarity important?



14.  What are hydrogen bonds? Why are hydrogen bonds important?



15.  What does the term “organic” mean?  Name the four organic compounds in living organisms.


16.  Are the following compounds organic or inorganic?

a.       C6H12O6

b.      H2O

c.       CO2

d.      C3H8



17.  What makes carbon unique?




18.  Complete the following table:


Organic compound

Elements present











Nucleic acids










19.   What is the function of a carbohydrate?



20.  How can you identify a carbohydrate?




21.  Give three examples of each of the following types of carbohydrates;

a.       Monosaccharides

b.      Disaccharides

c.       Polysaccharides





22.  How are isomers the same? How are isomers different?



23.  What is dehydration synthesis? What is hydrolysis?



24.  What is the main function of a lipid? What are the other three functions of lipids?



25.   How can you identify a lipid?



26.  What are the two types of molecules that make up a lipid?



27.   Why don’t lipids dissolve in water?



28.  What is the definition of a saturated fat (lipid)? Unsaturated fat (lipid)?



29.  Why are polyunsaturated fats (lipids) better for us?



30.  Name the three parts of a nucleotide.



31.  Name the two examples of nucleic acids.



32.  What are the two main functions of a protein?




33.  How can you identify a protein?



34.  What does denature mean?  How can you denature a protein (two ways)?




35.  What are the basic building blocks of proteins?




36.  Name the three parts of an amino acid.



37.  What part(s) do all amino acids have in common? What part(s) is different for all amino acids?




38.  What is an enzyme?  What are enzymes made out of?




39.   Explain how an enzyme works?  (use the words substrate and active site)







24.  Label the following diagram:






25.  Identify the following compounds as a carbohydrate, lipid, protein or none of these.

a.           c.



b.   d.


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