Chapter 02: Basic Chemistry Herlihy: The Human Body in Health and Illness, 6th Edition

Chapter 02: Basic Chemistry
Herlihy: The Human Body in Health and Illness, 6th Edition


MULTIPLE CHOICE

1. Which of the following are located in the orbits surrounding the nucleus?
a. Isotopes
b. Protons
c. Electrons
d. Neutrons
ANS: C
2. The sharing of electrons is referred to as
a. covalent bonding.
b. ionic bonding.
c. radioactive decay.
d. isotope formation.

ANS: A

3. Which element must be present for a substance to be classified as organic?
a. Iodine
b. Iron
c. Carbon
d. Calcium
ANS: C


4. Which of the following is a measurement of hydrogen ion concentration [H+]?
a. Atomic number
b. Atomic mass
c. Isotope
d. pH
ANS: D


5. A cation is a(n)
a. positively charged ion.
b. electrolyte.
c. isotope.
d. ion that has an atomic mass of 2.
ANS: A

6. Which of the following is an anion?
a. Sodium ion
b. Potassium ion
c. Chloride ion
d. Calcium ion
ANS: C

, 7. What kind of ion would have 8 protons in its nucleus and 9 electrons in its orbits?
a. Cation
b. Electrolyte
c. Acid
d. Anion
ANS: D

8. Which process refers to the dissociation of NaCl into Na+ and Cl–?
a. Radioactivity
b. Ionization
c. Covalent bonding
d. Hydrogen bonding

ANS: B

9. Which of the following is descriptive of the chemical reaction in the previous question?
a. Cation + anion  electrolyte
b. Electrolyte  cation + anion
c. Electrolyte + anion  cation
d. Neutralization of an acid by a base
ANS: B

10. Which of the following is true of an anion?
a. An anion always ionizes to form electrolytes.
b. An anion always has an atomic mass of 15.
c. An anion carries a negative charge.
d. A hydrogen ion is an anion.
ANS: C

11. NaCl, table salt, is called a(n)
a. anion.
b. electrolyte.
c. cation.
d. ion.
ANS: B


12. Which of the following is an anion?
a. NaCl
b. KCl
c. H2SO4
d. HCO3–
ANS: D

13. Which of the following represents bicarbonate, an anion that is important in acid–base
regulation?
a. HCl