Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Name Date Class
Carbon Chemistry 41
Chapter
Test
Carbon Chemistry
I. Testing Concepts
Directions: In the blank at the left, write the letter of the term or phrase that
best completes each statement or
answers each question.
1. Which of the following items is not an organic compound?
a. methane b. protein c. gold d. glucose
2. The hydroxyl group is made up of one ______ atom and one hydrogen atom joined
by a covalent bond.
a. carbon b. nitrogen c. chlorine d. oxygen
3. Formic and acetic acids are examples of simple ______.
a. amino acids b. carboxylic acids c. isomers d. carbohydrates
4. ______ is a chemical reaction in which many small molecules link together to form
long chains.
a. Substitution b. Fermentation c. Saturation d. Polymerization
5. Proteins serve as ______ for chemical reactions in the cells of the body.
a. catalysts b. sugars c. lipids d. alcohols
6. An unsaturated hydrocarbon with a triple bond and two carbons is ______.
a. a catalyst b. butane c. acetylene d. an isomer
7. There are a total of ______ amino acids that bond together to form different proteins.
a. 20 b. 19 c. 2 d. 45
8. When both an amino group (–NH2) and a carboxyl group (–COOH) replace hydrogens
on the same carbon molecule, a compound known as a(n) ______ is formed.
a. amino acid c. lipid
b. carbolic acid d. saturated hydrocarbon
9. ______ cannot move through the cell membranes of the body and therefore must
first be broken down into simpler sugars.
a. Fructose b. Lipids c. Glucose d. Sucrose
10. When the amino acid glycine forms a bond with the carboxyl group of the amino
acid alanine, a molecule of ______ is released.
a. water b. carbohydrate c. lipid d. carboxyl group
11. A molecule of ______ results when carbon atoms singly bond together to form a
closed ring containing five carbons.
a. cyclopentane b. butadiene c. acetylene d. ethylene
12. Which of the following is not a common alcohol?
a. methanol b. isopropyl alcohol c. glycine d. ethanol
13. Acetic acid can be thought of as the hydrocarbon methane with a(n) ______
substituted.
a. amino group c. carboxyl group
b. methane molecule d. hydroxyl group
AssessmentCopyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Name Date Class
Chapter Test (continued)
42 Carbon Chemistry
14. Which of the following choices does NOT correctly describe cholesterol?
a. not found in plant oils c. used for building cell membranes
b. is a carbohydrate d. is a complex lipid
15. A diet low in ______ will less likely lead to cardiovascular problems.
a. unsaturated fats b. protein c. saturated fats d. carbohydrates
16. Compounds that have the same chemical formula but different structures
are ______.
a. isomers b. amino acids c. carbohydrates d. alcohols
17. When all of the bonds in a hydrocarbon are ______ bonds, the molecule is called a
saturated hydrocarbon.
a. double b. circular c. single d. triple
18. To make a substituted hydrocarbon, one or more ______ atoms are taken off and
replaced by other atoms or groups of atoms.
a. carbon b. nitrogen c. hydrogen d. hydroxyl
19. Which of the following elements is NOT found in carbohydrates?
a. carbon b. nitrogen c. oxygen d. hydrogen
20. Starches, which occur naturally in grains, are polymers of ______ molecules.
a. sucrose b. glycogen c. fructose d. glucose
Directions: Identify each statement as true or false. Rewrite the false
statements to make them correct.
21. Eight of the amino acids that are needed to make proteins cannot be produced by
your body.
22. All organic compounds contain carbon.
23. As the size of a hydrocarbon molecule increases, the possibilities for isomers decrease.
24. Living organisms are necessary to form organic compounds.
25. The compound alcohol is formed when a hydroxyl group replaces a hydrogen atom
in a hydrocarbon.
Assessment