BIOL 1201 Louisiana State University | Exam 1 Practice
Questions And Answers | 2025-2026 Updated Tests
1. Titanium has an atomic number of 22. How many protons, neutrons, and electrons are
in an isotope of titanium with mass number of 48?
a. p = 22, n = 26, e = 22
b. p = 11, n = 26, e = 11
c. p = 11, n = 11, e = 70
d. p = 11, n = 22, e = 48
e. p = 22, n = 22, e = 48
2. What numbers must be placed as coefficients in the blanks for the chemical reaction
below in order to ensure that matter is conserved?
a. 1; 1; 1
b. 4; 3; 4 Fe3O4 + __C → __Fe + __CO
c. 2; 1; 2
d. 3; 4; 3
e. 0; 3; 4
3. Which of the following indirectly determines the bonds that an atom can form?
a. protons
b. neutrons
c. Electrons
4. What do elements with atomic numbers 6, 14, and 22 have in common?
a. same number of electrons
b. same atomic mass
c. same number of valence electrons and will form the same number of covalent
bonds
d. all of the above
e. none of the above
5. An atom of oxygen has an atomic number of 8. How many electrons are in the first,
second, and third electron shells, respectively?
a. 2, 3, 3
b. 2, 6, 0
, c. 8, 0, 0
d. 0, 4, 4
e. none of the above
6. What type of bond is very prevalent in lipids and gives lipids their hydrophobic
properties?
a. polar covalent
b. nonpolar covalent
c. strong ionic
d. weak ionic
e. hydrogen
7. If water was treated with molecules that reduce or remove surface tension, which of the
following would occur?
a. Treated water droplets would form a thin film instead of beading on a waxed surface.
b. Treated water would form smaller droplets when dripping from a sink.
c. Water striders would sink.
d. All of the above would occur.
e. Only a and c would occur.
8. Which of the following explains how a pool of water can crack a boulder sitting in it
during freezing weather?
a. expansion of the water when it freezes
b. corrosion of the minerals in the boulder
c. adhesion of the water to the minerals in the boulder
d. a and b
e. a and c
9. Water has an unusually high specific heat. What does this mean?
a. At its boiling point, water changes from liquid to vapor.
b. A large amount of heat is required to raise the temperature of water.
c. Ice floats in liquid water.
d. Salt water freezes at a lower temperature than pure water.
e. Floating ice can insulate bodies of water.
10. Compared to an acidic solution at pH 5, a basic solution at pH 8 has _____.
a. 1,000 times more hydrogen ions
Questions And Answers | 2025-2026 Updated Tests
1. Titanium has an atomic number of 22. How many protons, neutrons, and electrons are
in an isotope of titanium with mass number of 48?
a. p = 22, n = 26, e = 22
b. p = 11, n = 26, e = 11
c. p = 11, n = 11, e = 70
d. p = 11, n = 22, e = 48
e. p = 22, n = 22, e = 48
2. What numbers must be placed as coefficients in the blanks for the chemical reaction
below in order to ensure that matter is conserved?
a. 1; 1; 1
b. 4; 3; 4 Fe3O4 + __C → __Fe + __CO
c. 2; 1; 2
d. 3; 4; 3
e. 0; 3; 4
3. Which of the following indirectly determines the bonds that an atom can form?
a. protons
b. neutrons
c. Electrons
4. What do elements with atomic numbers 6, 14, and 22 have in common?
a. same number of electrons
b. same atomic mass
c. same number of valence electrons and will form the same number of covalent
bonds
d. all of the above
e. none of the above
5. An atom of oxygen has an atomic number of 8. How many electrons are in the first,
second, and third electron shells, respectively?
a. 2, 3, 3
b. 2, 6, 0
, c. 8, 0, 0
d. 0, 4, 4
e. none of the above
6. What type of bond is very prevalent in lipids and gives lipids their hydrophobic
properties?
a. polar covalent
b. nonpolar covalent
c. strong ionic
d. weak ionic
e. hydrogen
7. If water was treated with molecules that reduce or remove surface tension, which of the
following would occur?
a. Treated water droplets would form a thin film instead of beading on a waxed surface.
b. Treated water would form smaller droplets when dripping from a sink.
c. Water striders would sink.
d. All of the above would occur.
e. Only a and c would occur.
8. Which of the following explains how a pool of water can crack a boulder sitting in it
during freezing weather?
a. expansion of the water when it freezes
b. corrosion of the minerals in the boulder
c. adhesion of the water to the minerals in the boulder
d. a and b
e. a and c
9. Water has an unusually high specific heat. What does this mean?
a. At its boiling point, water changes from liquid to vapor.
b. A large amount of heat is required to raise the temperature of water.
c. Ice floats in liquid water.
d. Salt water freezes at a lower temperature than pure water.
e. Floating ice can insulate bodies of water.
10. Compared to an acidic solution at pH 5, a basic solution at pH 8 has _____.
a. 1,000 times more hydrogen ions
