Dew collects on a spider web early in the morning. This is an example of what change of matter?
What is condensation?
100
The particles of water that evaporate from an open container have __________________ than the particles that remain.
A. more speed.
B. Greater speed
C. Higher energy
D. More speed and higher energy
What is more speed and higher energy
100
Freezing is an example of this change
What is exothermic
100
Which of the following is the LEAST viscous?
A. honey
B. tar
C. water
D. lave
What is C. water
200
In a gaseous state, particles ___________.
A. move independently
B. move fast enough to break away completely from one another
C. have empty space between them.
D. All of the above.
What is D. all of the above
200
Dry ice is an example of this change of state.
What is sublimation.
200
You can cause water to change state by removing or adding ___________.
What is energy
200
Which of the following describes what happens as the temperature of a gas in a balloon increases?
A. The speed of particles decreases.
B. The volume of the gas increases and the speed of particles increases.
C. The volume decreases.
D. The pressure decreases.
What is B. The volume of the gas increases and the speed of particles increases.
200
This is the amount of force exerted on a given area.
What is pressure.
300
Particles of this state of matter are close together but move past each other.
What is liquid
300
This is a change from a liquid to a gas.
What is boiling
300
The temperature at which a substance changes from a solid to a liquid is its _______________.
What is melting point.
300
According to Charles's Law, if you were to put an inflated balloon in a freezer for about 10 minutes, the balloon would have shrunk because gas volume decreases as __________________ decreases.
What is temperature.
300
Which of the following does NOT describe pressure?
A. the amount of force exerted on a given area
B. decreases as particles move faster
C. caused by collisions of particles against the inside of the container
D. increases as more particles are placed in a container.
What is decreases as particles move faster.
400
This is an example of a substance that contains plasma.
What is fire, lightning, aurora borealis
400
Name an example of an endothermic change.
What is melting, vaporization, sublimation
400
Boiling points and freezing points are examples of what type of properties?
What is physical properties?
400
Boyle's Law states that for a fixed amount of gas at a constant ________________, the volume increases as pressure ________________.
What is temperature; increases.
400
This law explains the relationship between volume and pressure for a fixed amount of gas.
What is Boyle's Law?
500
Which of the following describes what happens as the temperature of a gas in a balloon increases?
A. The speed of particles decreases.
B. The volume of the gas increases and the speed of particles increases.
C. The volume decreases.
D. The pressure decreases.
What is B. The volume of the gas increases and the speed of particles increases.
500
Name an example of exothermic change.
What is freezing or condensation
500
The temperature at which a liquids changes into a solid is its _________________.
What is freezing point.
500
Which of the following examples involves an exothermic change?
A. Ice melting on a warm day.
B. Water boiling in a tea kettle
C. Gaseous water particles coming together to form fog.
D. Air in a bicycle tire gaining pressure after a long ride.
What is C. gaseous water particles coming together to form fog.
500
Atoms and molecules in matter ________________.
A. are attracted to one another.
B. are constantly moving.
C. move faster at higher temperatures.
D. All of the above.