Chem 219 Module 3 Exam | Portage Learning Principles
of Organic Chemistry | 14 Actual Q&A 2025
,Stereochemistry - answer- ; the study of the three-dimensional structure of
molecules
Three blocks of the same shape and size are placed in front of you. Block A has a
mass of 3.0 g, block B is 5.0 g, and block C is 10.0 g. Which has the higher density?
- answer- ; Density is the ratio of mass to volume. Since the volume is constant
between all the blocks, then the block with the highest mass will have the highest
density.
Density equation - answer- ; mass/volume
dRT = PM
The solubility of a gas in a liquid generally
A) increases with increasing temperature.
B) increases with decreasing temperature.
C) increases with increasing pressure.
D) both (a) and (c).
E) both (b) and (c). - answer- ; E) both (b) and (c)
Which of the following properties, in general, increase as we move left to right
across a period in the periodic table?
1. atomic radius
2. ionization energy
,3. metallic character
A) 1 only
B) 2 only
C) 3 only
D) 1 and 2 only
E) 2 and 3 only - answer- ; B) 2 only
All the following statements concerning a sample of oxygen gas at 1.00 atm
pressure are true EXCEPT
A) the molecules are in constant rapid random motion.
B) the pressure exerted by gaseous oxygen is due to the impact of the molecules
with the walls of the container.
C) the average kinetic energy of the gaseous oxygen is inversely proportional to
the absolute temperature of the gas.
D) collisions between the gaseous molecules are elastic.
E) the volume occupied by the oxygen molecules is negligible compared with the
size of the container. - answer- ; C) the average kinetic energy of the gaseous
oxygen is inversely proportional to the absolute temperature of the gas.
A bond in which an electron pair is unequally shared by two atoms is
A) ionic.
B) polar covalent.
C) nonpolar covalent.
, D) coordinate covalent.
E) dipolar. - answer- ; B) polar covalent.
Which of the following statements is (are) true?
1. An excited atom can return to a higher energy level by emitting light energy.
2. An atom can be excited to a higher energy level by absorption of light energy.
3. The frequency and wavelength of light are inversely proportional.
A) 1 only
B) 2 only
C) 1 and 3 only
D) 2 and 3 only
E) 1, 2, and 3 - answer- ; D) 2 and 3 only
Solvent - answer- ; A liquid substance capable of dissolving other substances
Solute - answer- ; A substance that is dissolved in a solution.
Solution - answer- ; A homogeneous mixture that forms when one substance
dissolves another.
The measure of the attraction that an atom has for the electrons in a chemical
bond is called
A) electron affinity.
of Organic Chemistry | 14 Actual Q&A 2025
,Stereochemistry - answer- ; the study of the three-dimensional structure of
molecules
Three blocks of the same shape and size are placed in front of you. Block A has a
mass of 3.0 g, block B is 5.0 g, and block C is 10.0 g. Which has the higher density?
- answer- ; Density is the ratio of mass to volume. Since the volume is constant
between all the blocks, then the block with the highest mass will have the highest
density.
Density equation - answer- ; mass/volume
dRT = PM
The solubility of a gas in a liquid generally
A) increases with increasing temperature.
B) increases with decreasing temperature.
C) increases with increasing pressure.
D) both (a) and (c).
E) both (b) and (c). - answer- ; E) both (b) and (c)
Which of the following properties, in general, increase as we move left to right
across a period in the periodic table?
1. atomic radius
2. ionization energy
,3. metallic character
A) 1 only
B) 2 only
C) 3 only
D) 1 and 2 only
E) 2 and 3 only - answer- ; B) 2 only
All the following statements concerning a sample of oxygen gas at 1.00 atm
pressure are true EXCEPT
A) the molecules are in constant rapid random motion.
B) the pressure exerted by gaseous oxygen is due to the impact of the molecules
with the walls of the container.
C) the average kinetic energy of the gaseous oxygen is inversely proportional to
the absolute temperature of the gas.
D) collisions between the gaseous molecules are elastic.
E) the volume occupied by the oxygen molecules is negligible compared with the
size of the container. - answer- ; C) the average kinetic energy of the gaseous
oxygen is inversely proportional to the absolute temperature of the gas.
A bond in which an electron pair is unequally shared by two atoms is
A) ionic.
B) polar covalent.
C) nonpolar covalent.
, D) coordinate covalent.
E) dipolar. - answer- ; B) polar covalent.
Which of the following statements is (are) true?
1. An excited atom can return to a higher energy level by emitting light energy.
2. An atom can be excited to a higher energy level by absorption of light energy.
3. The frequency and wavelength of light are inversely proportional.
A) 1 only
B) 2 only
C) 1 and 3 only
D) 2 and 3 only
E) 1, 2, and 3 - answer- ; D) 2 and 3 only
Solvent - answer- ; A liquid substance capable of dissolving other substances
Solute - answer- ; A substance that is dissolved in a solution.
Solution - answer- ; A homogeneous mixture that forms when one substance
dissolves another.
The measure of the attraction that an atom has for the electrons in a chemical
bond is called
A) electron affinity.
