WorksheetsGases Unit Review
Total questions: 20
Worksheet time: 16mins
A hypothetical gas that perfectly fits all the assumptions of the kinetic molecular theory is known as
real gas
ideal gas
imaginary gas
perfect gas
When any kind of gas such, as nitrogen or carbon dioxide, is heated, it
sublimates.
evaporates
explodes
expands
As the temperature of a substance increases:
The speed, and average kinetic energy of the particles, both increase.
The speed, and average kinetic energy of the particles, both decrease.
The speed of the particles increases, but the average kinetic energy of the particles decreases.
The speed of the particles decreases, but the average kinetic energy of the particles increases.
Which of the following is an assumption of the kinetic-molecular theory of gases?
Collisions between gas particles are perfectly elastic.
Gases consist of closely spaced particles.
Gas particles move around in an orderly manner.
The temperature of a gas depends on the mass of the gas particles.
Which condition is necessary for most gases to behave nearly ideally?
high pressure
high temperature
low compressibility
low expansion
For a fixed amount of gas at a constant temperature, the volume increases as the pressure...
remains steady.
increases.
decreases.
fluctuates.
Which statement is not a key point of the particle theory of matter?
The particles of matter are in constant motion
All matter is made up of particles
Particles naturally repel one another
There are spaces between particles
Standard temperature and pressure (STP) mean
A temperature of 0°C and a pressure of 101.3 kPa, or 1 atmosphere (atm).
A temperature of 100°C and a pressure of 101.3 kPa, or 1 atmosphere (atm).
A temperature of 0°K and a pressure of 10 atmosphere (atm).
At STP, 1 mol, or representative particles, of any gas occupies a volume of......................
24.4 L
44.2 L
22.4 L
stay the same
there is no relationship between pressure and volume
Two bottles at the same temperature containing hydrogen sulphide (H2S) and ammonia (NH3) are placed at equal lengths from you and are opened at the same time. Which gas would you smell first?
A. Both
B. Hydrogen sulphide
C. None
D. Ammonia
Which equation best represents that relationship shown in the diagram?
P1+P2+P3=Ptotal
PV=nRT
P1V1=P2V2
q=mCΔT
What is the total pressure of the heliox gas in the diagram?
300 kPa
100 kPa
400 kPa
500 kPa
In a mixture of gases, each gas contributes to the total pressure. The individual contribution of each gas is known as the _________________.
partial volume
partial pressure
molar mass
mole ratio
What is diffusion?
The movement of gas particles from a higher concentration to a lower concentration.
The rate at which gas flows through the air.
An explosion of gases.
The ability of a gas to move from high pressure to a low pressure.
