Unit 4 and 5 Quiz

Which of the following changes to a system would cause the individual atoms to seperate?

• Transferring the substance to a smaller container

• Adding heat to the system

• Changing the substance from a liquid to a solid

• Decreasing the overall kinetic energy in the system

If the individual atoms are vibrating slowly and are packed tightly what state of matter would it be?

• Gas

• Liquid

• Solid

• Molecule

The state of matter where the particles are flowing and take the shape of the container that it is in

• Gas

• Liquid

• Solid

• Atom

Name the state of matter where particles are moving extremely fast and bouncing off of all surfaces in the container.

As thermal energy is added to a system, which of the following changes can you predict?

• Vibration of individual particles will increase

• Space between the particles will decrease

• Temperature in the system will decrease

• The pressure of the air around the system will increase

How are kinetic energy and temperature related?

• As temperature increases, kinetic energy will decrease

• As kinetic energy increases, temperature will decrease

• As temperature decreases, kinetic energy stays the same

• As kinetic energy decreases, temperature decreases

EXPLAIN YOUR ANSWER!!! Use complete sentences to get full credit!

Describe the particle motion in this photo. What would you expect the thermal and kinetic energy to be like?

EXPLAIN YOUR ANSWER!!! Use complete sentences to get full credit!

Pick A, B, C, or D and describe what is happening to the particles during that change in state of matter.

EXTRA CREDIT!!!
Cold water temp: $3\degree C$  Hot water temp:  $83\degree C$ 

Predict the mixed temperature

•  $43\degree F$  

•  $172\degree C$  

•  $44.5\degree C$  

•  $43\degree C$  

Thermal energy of a substance is determined by...

• Only temperature

• The temperature, total number of particles, and its conductivity

• Only total number of particles

• The container the substance is in