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8th Grade: Chapt. 10-Organic Chemistry Test-Retake

Multiple Choice (1 pt. ea.)
Identify the letter of the choice that best completes the statement or answers the question.
 
 
nar001-1.jpg
Figure 5
 

 1. 

Figure 5 shows a model of a methane molecule. What is the chemical formula for this molecule?
a.
CH4
c.
CH3
b.
C4H
d.
C3H
 

 2. 

Almost all of the mass of a living thing consists of water and organic compounds. Which of the following is the inorganic source of the carbon in the organic compounds.
a.
sugars
c.
carbon dioxide
b.
water
d.
nitrates
 

 3. 

Which of the following biomolecules is a part of the nitrogen cycle?
a.
proteins
c.
lipids
b.
carbohydrates
d.
starch
 
 
nar005-1.jpg
Figure 2
 

 4. 

Figure 2 shows a molecule. What elements are in this molecule?
a.
carbon and sulfur
c.
phosphorus and oxygen
b.
hydrogen and nitrogen
d.
oxygen and hydrogen
 

Yes/No
Indicate whether or not you agree with the sentence or statement.
 
 
nar002-1.jpg
Figure 7
 

 5. 

Analyze the structure in Figure 7. Is the structure drawn correctly?
 
 
nar003-1.jpg
Figure 8
 

 6. 

Analyze the structure in Figure 8. Is the structure drawn correctly?
 
 
nar004-1.jpg
Figure 14
 

 7. 

Analyze Figure 14. Is the structure shown a polymer?
 
 
nar006-1.jpg
Figure 11
 

 8. 

Analyze Figure 11. Is the structure shown a polymer?
 
 
nar007-1.jpg
Figure 15
 

 9. 

Analyze Figure 15. Is the structure shown a polymer?
 

Completion
Complete each sentence or statement.
 

 10. 

The most common substance in any animal’s body is ____________________.
 

 

 11. 

Hydrocarbons are organic compounds that contain only carbon and ____________________.
 

 

 12. 

Scientists are looking for life primarily on other planets that have ____________________.
 

 

Matching  (1 pt. ea.)
 
 
Match the following terms with the correct description. Each terms is used once.
a.
biomolecule
e.
organic compounds
b.
inorganic molecule
f.
hydrocarbon
c.
functional group
g.
saturated
d.
isomers
h.
unsaturated
 

 13. 

a large, organic molecule found in living things
 

 14. 

refers to a hydrocarbon that contains one or more double or triple bonds between two carbon atoms
 

 15. 

refers to a hydrocarbon that contains only single covalent bonds between carbon atoms
 

 16. 

a group of atoms that bonds to carbon atoms in organic compounds
 

 17. 

compounds based on carbon atoms bonded to each other or to hydrogen atoms
 

 18. 

compounds with the same chemical formula but a different structural formulas
 
 
Match these names with the correct molecules. Each term is used once.
a.
propamine
d.
propane
b.
butanoic acid
e.
methanoic acid
c.
methanol
f.
butamine
 

 19. 

HCOOH
 

 20. 

NH2--CH2--CH2--CH2--CH3
 

 21. 

CH3--OH
 

 22. 

CH3--CH2--CH3
 
 
Match the following terms with the correct examples of those terms. Each term is used once.
a.
carbohydrates
b.
lipids
c.
amino acids
d.
nucleic acids
e.
proteins
f.
biomass
 

 23. 

bacon fat and olive oil
 

 24. 

DNA and RNA
 

 25. 

chains of amino acids
 



 
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