Definitions
Work
The amount of energy in a closed system,
a. stays the same.
b. changes.
stays the same.
In which state of matter are the particles moving the fastest?
a. Solid
b. Liquid
c. Gas
c. Gas
Heat flows from a cold floor to warm feet.
a. True
b. False
b. False
Solid, Liquid, or Gas?
This state of matter has molecules that are very far apart.
Gas
What is the term used for when matter changes from a gas to a liquid?
Condensation
Energy can be created.
a. True
b. False
b. False
What is the term used for when matter changes from a liquid to a gas?
In the water bath lab, which cup in the cup system gained the most energy?
a. Hot Cup
b. Room Temperature Cup
c. Cold Cup
Solid, Liquid, or Gas?
This state of matter has molecules that can slide past each other.
Liquid
What is the term used for when matter changes from a liquid to a solid?
Freezing
Which has more heat energy?
a. Iceberg
b. Lighted match
a. Iceberg
Solid, Liquid, or Gas?
Put these states of matter in order from slowest moving molecules to fastest moving molecules.
Solid, Liquid, and Gas
What energy transformation occurs from a light bulb?
a. Electrical --> Kinetic + Potential
b. Electrical --> Sound
c. Electrical --> Chemical
d. Electrical --> Light + Thermal
d. Electrical --> Light + Thermal
Solid, Liquid, or Gas?
This state of matter has molecules that are tightly packed, move very little, and vibrate in place.
Solid
What is the term used for when matter changes from a solid to a liquid?
Melting
Thermal energy is the energy of _____.
a. Motion
b. Heat
c. Light
d. Sound
b. Heat
Solid, Liquid, and/or Gas?
Which of these states of matter have definite volumes? (*Hint: There are two answers.)
Solid and liquid
Which energy transformation matches animals eating food?
a. Electrical to Potential
b. Chemical to Kinetic
c. Potential to Chemical
d. Heat to Light
b. Chemical to Kinetic
Solid, Liquid, or Gas?
Which of these states of matter have a defined shape?
Solid
What is the term used for when matter changes from a solid to a gas?
Kinetic energy is the energy of _____.
a. Motion
b. Heat
c. Light
d. Sound
a. Motion
What is the term used for when matter changes from a gas to a solid?
Deposition
Why does a Thermos keep liquids hot or cold?
a. Because it's magic
b. Because of the vacuum between the layers
c. Because it's made of metal
d. Because it looks cool
b. Because of the vacuum between the layers
This question is NOT on the test...
A cup of hot water has about 64 kilojoules of energy in it, and it is touching a cup of boiling water, which has about 100 kilojoules of energy in it. If no energy is lost to the environment, what will the average expected energy, per cup, be in this closed system?
82 kilojoules