COLUMN 1
What is called the measure of hotness and coldness of a object?
Temperature
The space occupied by a gas is called its ______.
Volume
The measure of force exerted by gas particles on the walls of a container is called_______.
Pressure
According to the Kinetic Molecular Theory, gas pressure is caused by:
a) The weight of gas molecules
b) The collisions of gas particles with container walls
c) The volume of gas molecules
d) The attraction between gas molecules
b) The collisions of gas particles with container walls
According to the Kinetic Molecular Theory, what happens to gas molecules when temperature increases?
A) They move slower.
B) They move faster.
C) They become larger.
D) They stop colliding with each other.
B) They move faster.
According to the Kinetic Molecular Theory, gas particles are always:
a) Stationary
b) Moving in random directions
c) Arranged in fixed positions
d) Moving only when heat is applied
b) Moving in random directions
Gases have significant intermolecular forces according Kinetic Molecular Theory (TRUE/FALSE)
False
Which of the following is an assumption of the Kinetic Molecular Theory of gases?
A) Gas molecules are strongly attracted to each other.
B) Gas molecules move in continuous, random motion.
C) Gas molecules have significant volume relative to the container.
D) Gas molecules lose energy during collisions.
B) Gas molecules move in continuous, random motion.
If the temperature of a gas is doubled (in Kelvin), what happens to the average kinetic energy of its particles?
a) It doubles
b) It remains the same
c) It decreases by half
d) It becomes four times larger
a) It doubles
Why do lighter gas molecules move faster than heavier ones at the same temperature?
A) Lighter molecules experience stronger intermolecular forces.
B) All gas molecules move at the same speed regardless of mass.
C) At the same temperature, all gases have the same average kinetic energy, meaning lighter molecules must move faster.
D) Heavier gas molecules repel lighter ones, making the lighter ones move faster.
C) At the same temperature, all gases have the same average kinetic energy, meaning lighter molecules must move faster.
Since kinetic energy depends on temperature, lighter molecules must move faster to maintain the same kinetic energy as heavier ones.
How does KMT explain why increasing the volume of a gas at constant temperature leads to a decrease in pressure?
When volume increases, gas particles have more space to move, which reduces the frequency of collisions per unit area.
Why are gas molecule collisions considered "elastic" in the Kinetic Molecular Theory?
A) Because gas molecules stick together after collision.
B) Because total kinetic energy is conserved during collisions.
C) Because energy is lost when molecules collide.
D) Because heavier molecules transfer energy to lighter ones.
B) Because total kinetic energy is conserved during collisions.