Pay And Download the Complete Chapter Questions And Answers
Chapter 02 The Chemical Basis of Life
$2.50
Chapter 02 The Chemical Basis of Life
Complete chapter Questions And Answers
Sample Questions
TRUE/F ALSE
1. Biochemistry involves the chemical makeup of living organisms and the underlying process of life activities.
ANS: T DIF: Memorization REF: Page 34 TOP: Introduction
2. The number of protons in the nucleus of an atom determines its atomic mass.
ANS: F DIF: Memorization REF: Page 36 TOP: Atomic Number and Atomic Mass
3. The positively charged electrons are found in clouds outside the nucleus of an atom.
ANS: F DIF: Memorization TOP: Atomic Structure
4. Two shared pairs of electrons represent a single covalent bond.
ANS: F DIF: Application REF: Page 39 Bonds
5. The digestion of food is an example of a decomposition reaction.
ANS: T DIF: Application REF: Page 41 TOP: Chemical Reactions
REF: Page 36
TOP: Covalent
6. The number and arrangement of electrons orbiting in an atom’s outer shell determine its chemical activity.
ANS: T DIF: Application REF: Page 37 TOP: Energy Levels 7. An atom is chemically inert if its outermost shell has two pairs of electrons.
ANS: F DIF: Application REF: Page 37 TOP: Energy Levels
8. An isotope of an element contains the same number of neutrons but different numbers of protons.
Mosby items and derived items © 2013, 2010, 2007, 2003 by Mosby, Inc., an affiliate of Elsevier Inc.
Test Bank 2A-2
ANS: F DIF: Memorization TOP: Isotopes
9. Electrovalent and ionic bonds are the same.
ANS: T DIF: Memorization TOP: Ionic Bonds
REF: Page 37
REF: Page 38
MULTIPLE CHOICE
1. Which of the following represents a trace element in the body? a. Sulfur
b. Chlorine
c. Iron
d. Phosphorus
ANS: C DIF: Memorization REF: Page 35 (Table 2-1)
TOP: Basic Chemistry
2. The kind of element is determined by the number of: a. protons.
b. neutrons. c. mesotrons. d. electrons.
ANS: A DIF: Application REF: TOP: Atomic Number and Mass Number
3. Atomic weight is determined by the number of:
- protons and electrons.
- neutrons and electrons.
- neutrons, protons, and electrons.
- protons and neutrons.
ANS: D DIF: Application REF: TOP: Atomic Number and Mass Number
Page 36
Page 36
4. Carbon has an atomic number of 6. The number of electrons found in the first shell is: a. 2.
b. 4. c. 6. d. 8.
ANS: A DIF: Application REF: Page 37 TOP: Energy Levels
5. The atomic number of carbon is 6. How many unpaired electrons are in its outer shell? a. 2
b. 3
Mosby items and derived items © 2013, 2010, 2007, 2003 by Mosby, Inc., an affiliate of Elsevier Inc.
Test Bank 2B-2
c. 4 d. 5
ANS: C DIF: Application REF: Page 37 TOP: Energy Levels
6. A negatively charged subatomic particle that moves around the nucleus is a(n): a. orbital.
b. proton. c. neutron. d. electron.
ANS: D DIF: Memorization TOP: Atomic Structure
7. When atoms combine, they may gain, lose, or share: a. electrons.
b. protons. c. neutrons. d. nuclei.
ANS: A DIF: Application TOP: Attraction Between Atoms
REF: Page 36
8. An ionic bond is formed by:
a. two or more positive ions combining.
b. two or more negative ions combining.
c. a positive and a negative ion attracting each other. d. sharing of a pair of electrons.
ANS: C DIF: Application
9. An example of an element would be: a. Ne.
b. CO2.
c. C6H12O6. d. H2O.
ANS: A DIF: Application TOP: Elements and Compounds
REF: Page 38
REF: Page 34
TOP: Ionic Bonds
Add a review
There are no reviews yet.