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Kinetic Molecular Theory
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Sublimation occurs because particles: a) Gain enough energy to break free from solid forces b) Lose energy and vibrate slower c) Stay in place d) Move closer together
A
Doubling the temperature of a gas (constant volume) affects its pressure by: a) Doubling it b) Halving it c) No change d) Quadrupling it
A
Gas A is lighter than Gas B at the same temperature. Which moves faster? a) Gas A b) Gas B c) Both the same d) Cannot tell
A
On a cold morning, droplets form on the outside of a cold drink can. What change of state does this show? a) Evaporation — gas to liquid b) Condensation — gas to liquid c) Deposition — gas to solid d) Melting — solid to liquid
B
A sealed balloon filled with helium expands when placed in the sun. Which statement best explains this? a) Helium atoms gain energy and move faster, increasing pressure inside the balloon b) Helium atoms lose energy and move slower, decreas
A
Dry ice turns directly into carbon dioxide gas at room temperature. This is an example of: a) Deposition b) Sublimation c) Condensation d) Melting
B
According to the Kinetic Molecular Theory, pressure increases when gas is heated because: a) The particles get larger b) The container expands c) Particles move faster and hit the walls more often d) The number of particles increases
C
When a gas is compressed in a cylinder, what happens to the distance between particles and the frequency of collisions? a) Distance increases, collisions decrease b) Distance decreases, collisions increase c) Both distance and collisions de
B
When a solid changes to a liquid, the particles: a) Slow down and come closer b) Gain energy and move more freely c) Lose energy and become fixed d) Stop vibrating
B
The Kinetic Molecular Theory assumes that gas particles: a) Have strong attractions b) Are in constant random motion c) Do not collide d) Are motionless at room temperature
B
Which state of matter has the strongest intermolecular forces? a) Solid b) Liquid c) Gas d) Plasma
A
The movement of particles from high concentration to low concentration is called: a) Compression b) Diffusion c) Evaporation d) Condensation
B
A substance changes from liquid to gas at its: a) Melting point b) Boiling point c) Freezing point d) Condensation point
B
When gas particles collide with the walls of a container, they create: a) Energy b) Pressure c) Temperature d) Density
B
The average kinetic energy of particles is directly related to: a) Density b) Volume c) Temperature d) Pressure
C
Which change of state releases heat energy? a) Melting b) Evaporation c) Freezing d) Sublimation
C
Which change of state requires heat to be absorbed? a) Freezing b) Condensation c) Melting d) Deposition
C
The process of a solid changing directly to a gas is called: a) Condensation b) Sublimation c) Freezing d) Melting
B
When a gas cools and becomes a liquid, the process is called: a) Melting b) Condensation c) Evaporation d) Freezing
B
When temperature increases, particle motion: a) Slows down b) Stops c) Speeds up d) Disappears
C
hich state of matter has neither definite shape nor volume? a) Solid b) Liquid c) Gas d) Plasma
C
Which state of matter has no definite shape but definite volume? a) Solid b) Liquid c) Gas d) Plasma
B
Which state of matter has a definite shape and definite volume? a) Solid b) Liquid c) Gas d) Plasma
A
The particles in a gas: a) Are close together and move slowly b) Are far apart and move rapidly c) Vibrate in place d) Stay fixed
B
The particles in a liquid: a) Do not move b) Vibrate in fixed positions c) Slide past each other closely d) Are far apart and move fast
C
The particles in a solid: a) Move freely in all directions b) Are fixed in place and vibrate c) Slide past each other easily d) Are far apart
B
According to the theory, all matter is made up of: a) Large stationary objects b) Tiny particles in constant motion c) Energy waves d) Atoms that never move
B
The Kinetic Molecular Theory explains the behavior of: a) Atoms only b) Molecules in motion c) Solids only d) Elements only
B
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