Quiz of Unit 5 Matter and Gas Laws

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Class Period

• 1st Period
• 3rd Period
• 4th Period
• 5th Period
• 7th Period

Predict the energy trend as a substance changes from a solid to liquid to gas on this graph.

• It would decrease from top left to bottom right.
• It would increase from bottom left to top right.
• It would be a horizontal line as energy would remain constant.
• It would increase from solid to liquid, then decrease from liquid to gas.

What is going to happen to a balloon filled with helium that is left in a car overnight when the temperature drops approximately 20 degrees? (There are no holes in the balloon.) *

• Nothing, the balloon will look the same. Temperature change has no effect on gas volume.
• The balloon is going to look somewhat deflated due to the decrease in volume.
• The balloon will be completely deflated due to the freezing of the gas.
• The balloon is going to pop due to the increase in volume of the gas.

Consider this graph showing temperature over time. What would happen in this situation? The temperature decreases from 25°C to 15°C, the material _______ heat and its kinetic energy _________ as the material freezes to become a solid.

• absorbs, is divided
• releases, decreases
• remains the same, increases
• multiplies its, does not change

The kinetic energy of particles in a liquid is ______ the kinetic energy of particles in a solid.

• more than
• less than
• the same as
• none of these

The temperature of the substance during points 2 and 4 on the graph below can be described as ____________.

• Increasing due to an increase in temperature.
• Decreasing due to a decrease in temperature.
• Remaining constant due to the energy going into changing the phase.
• Constantly changing depending on the energy added.

In the phase diagram of a heating curve below, what is occurring at point D?

• A phase change is occcring
• The substance is in a gaseous phase only
• The substance is in a liquid phase only
• The flat line indicates a flat surface
• A phase change is not occuring

In the phase diagram of a heating curve below, what does the straight , flat line indicate?

• The flat line indicates a large temperature change
• The flat line indicates that the temperature is not changing
• The flat line indicates that temperature is changing a little bit
• The flat line indicates a flat surface

In which section of the graph below is the substance ONLY in a liquid state?

• A
• B
• C
• D