1 - Chemistry
Name ________________________________ Date _________ Class __________
Unit: Organic Chemistry Review
1. Compared to bonds between carbon atoms in alkanes, alkynes have
1) One more bond
2) Two more bonds
3) Three more bonds
4) Four more bonds
2. Which formula represents octene?
1) C4H8 2)C4H10 3)C8H16 4)C8H18
3. What structural formula represents 1,2,3-trichlorobutane?
1) Cl Cl Cl 2) Cl
| | | |
CH2=CHCH2 Cl-C-CH2CH2CH3
|
Cl
Cl Cl Cl
| | | 4) CH2CH2CH2CH3
3) CH2CHCHCH3 |
Cl
4) What molecule contains a double covalent bond?
1. Ethanoic acid
2. Ethane
3. Butane
4. 1,2 dichloroethane O
||
5) Which is the correct name for CH3CH2CH2CH2CH2CNH2
1. Hexanamide
2. 6-hexanamide
3. 6-hexanamine
4. hexanamine
6) Compounds with different structures but the same number and kinds of atoms are called
1. Aromatic compounds
2. Isomers
3. Organic compounds
4. Saturated compounds
7) Which statement correctly describes the reaction, saponification?
1. The addition of a halogen to an alkane
2. The addition of monomer units
3. The addition of a base to fat
4. The breakdown of a sugar by enzymes in yeast
8) Which is an unsaturated hydrocarbon?
1. CH3CH2CH2CH2CH2OH
2. CH3CH2CH2CH2CH2Cl
3. CH3CH2CH2CH2CH2CH2COOH
4. CH3CH2CH=CHCH2CH3
9) Why are organic reactions slower than inorganic reactions?
1. Organic compounds contain hydrogen
2. Organic compounds have low melting points
3. Organic compounds have high vapor pressure
4. Organic compounds contain covalent bonds
10) In a dehydration reaction,
1. An ester is produced from an alcohol and an acid
2. a water molecule is a reactant
3. a large molecule is split into two smaller ones
4. soap is produced
11) What is the correct structure for benzene?
1.
2. CH3CH2CH2CH3CH2CH3
12) Name CH3CH2CH2CH=CHCH3
1. 3-hexene
2. 2-hexene
3. 3-hexyne
4. 2-hexyne
13) Given the molecule, CH(CH, the symbol, ( represents
1. One pair of shared electrons
2. Two pairs of shared electrons
3. Three pairs of shared electrons
4. Four pairs of shared electrons
14) CH2CH2CH2COOH + A ( CH3CH2CH2COOCH2CH3 + H2O
In the reaction above, A represents an
1. Alcohol
2. Aldehyde
3. Ester
4. Acid
15) Which molecule would likely be produced by the breakdown of sugar by the enzymes in yeast?
1. CH3CH3
2. CH3CH2OH
3. CH2=CH2
4. CH3NH2
16) The reaction during which monomers are combined into one large molecule with water as a second product is called
1. Cracking
2. Dehydration polymerization
3. Addition polymerization
4. Combustion
17) Which formula represents an isomer of the compound propyl ethanoate?
1. CH3CH2CH2CH3
2. CH3CH2CH2CH2COOH
3. CH3CHOHCH2CH2OH
4. CH3CH2CH2COOCH2CH3
18) Which reaction represents the complete combustion of ethene?
1. C2H4+HCl ( C2H5Cl
2. C2H4 + Cl2 -> C2H4Cl2
3. C2H4 + 3O2 ( 2CO2 + 2H2O
4. C2H4 + H2O ( C2H5OH
19) Which polymers are synthetic?
1. Polyester and cotton
2. Cotton and cellulose
3. Cellulose and nylon
4. Nylon and polyester
20) Which statement explains why the element carbon forms so many compounds?
1. Carbon atom combine readily with oxygen
2. Carbon atoms have very high electronegativity
3. Carbon readily forms ionic bonds with other carbon atoms
4. Carbon readily forms covalent bonds with other carbon atoms
21) What is the name of CH3CH2COCH2CH3?
1. 3-butanone
2. 2-pentanone
3. 3-pentanone
4. propyl ethyl ether
22) What is the correct formula for 2-methyl-3-heptanol?
1. CH3CH2CH2CH2CH2CH2CH2OH
2. CH3CH2CH2CH2CHCHOHCH3
|
CH3
3. CH3CH2CH2CH2CHOHCHCH3
|
CH3
4. CH3CHOHCH2CH2CHOHCH2CH3
23) Which physical property makes it possible to separate the components of crude oil by means of distillation?
1. Melting point
2. Conductivity
3. Solubility
4. Boiling point
24) What substance is made of monomers joined together in long chains?
1. Halide
2. Amide
3. Ester
4. Starch
25) In benzene, the carbon atoms form
1. A chain
2. A polymer
3. A network
4. A ring
26) Compared to ionic compounds, hydrocarbons are
1. Soluble in water and have a high vapor pressure
2. Soluble in water and have a low vapor pressure
3. Insoluble in water and have a high vapor pressure
4. Insoluble in water and have a low vapor pressure
In the next three reactions that follow:
• Draw the structure of the product
• Name the type of reaction
• Name all organic molecules (reactants and products)
27) CH3CH=CH2 + Cl2 (
28) CH3CH3 + Br2 (
29) CH3CH2COOH + CH3CH2OH (
30)
Answers:
1. 2 2. 3 3. 3 4. 1 5. 1 6. 2
7. 3 8. 4 9. 4 10. 1 11. 4 12. 2
13. 3 14. 1 15. 2 16. 2 17. 2 18. 3
19. 4 20. 4 21. 3 22. 3 23. 4 24. 4
25. 4 26. 3
In the next three reactions that follow:
• Draw the structure of the product
• Name the type of reaction
• Name all organic molecules (reactants and products)
27. CH3CH=CH2 + Cl2 (CH3CHCH2
| |
Cl Cl
Propene (1-propene is 1,2-dichloropropane reaction type is addition,
redundant) specifically, halogenation
28. CH3CH3 + Br2 ( CH3CH2 + HBr
|
Br
Ethane 1-bromoethane (bromoethane is ok) reaction type is substititution
29. CH3CH2COOH + CH3CH2OH ( CH3CH2COOCH2CH3 + H2O
Propanoic acid ethanol ethyl propanoate reaction types is esterification
(dehydration synthesis is not
specific enough)
30.
-----------------------
3.
4.
[pic]
[pic]
Fermentation (produce alcohol from sugar)
2
2
CH3CHOHCH3 or CH3OCH2CH3
alcohol
esterification
[pic]
[pic]
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