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According to Kinetic Theory: Particles are always moving.
Which of the following statements about the particles of a gas is true?
The particles vibrate about a fixed position.
The particles are far apart and move freely.
The particles are packed close together, but in a disorderly arrangement.
The particles are stationary and orderly.
An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon?
The particles move faster and become further apart.
The particles move more slowly and become further apart.
The particles move faster and become closer together.
The particles move more slowly and become closer together.
When gas particles collide with other particles, they ...
Travel in a spiral.
Lose energy and move slowly.
Rebound in a straight line.
Which phase change occurs between points D and E if heat is removed? (HINT: The slanted lines represent the phases solid, liquid, and gas)
What phase change occurs between points B and C if heat is added?
Thermal energy always moves from :
Warm object to cool object
Object with low KE to object with high KE
Cool object o warm object
Object with high mass to object with low mass
A __________ has a definite shape and a definite volume.
Two flasks each contain water at 25 degrees Celsius. Which one has more heat energy?
They have the same heat energy because they are the same temperature.
The one on the right has more heat energy because it has less water.
The one on the left has more heat energy because it has more water.
Temperature is a measure of an object's average :
The state of matter with definite volume but no definite shape.
Which of the following is true when particles gain thermal energy?
Particles move more slowly.
Particles move closer together.
Particles stop moving.
Particles move further apart.
When a substance changes directly from a gas to a solid, it is called :
This diagram represents particles in a __________ state.