10 questions
Which is true about the particles in a solid as the solid starts to melt?
Mass is conserved, and the particles continue to vibrate in place.
Mass is lost when the particles start moving and are pulled closer together.
Mass is conserved when the particles start breaking away and sliding past each other.
Mass is gained when the particles start to move freely in all directions.
What changes in state does an aluminum can go through to be recycled into a new can?
boiling and condensation
melting and condensation
evaporation and deposition
melting and freezing
Frost on a window pane is an example of _______________________________.
melting
sublimation
deposition
evaporation
Water boiling in an open pan is an example of ___________________________.
condensation
evaporation
melting
freezing
On a hot day, a puddle dries up. Which statement is true?
The water in the puddle evaporates because the water changes to a gas at a temperature lower than the boiling point, and the mass of the water is conserved.
Some of the water boils, and some of it evaporates, but the mass of water is conserved.
The total mass of water decreases as evaporation occurs.
The water in the puddle boils because it is a hot day, but the total mass of liquid water and water vapor is the same.
Snow "disappearing" from the ground when it's below zero is an example of __________________________________.
freezing
sublimation
condensation
evaporation
Molten (liquid) steel cooling to form a solid is an example of __________________________________.
sublimation
freezing
boiling
deposition
An iceberg changing from a solid to a liquid is called _______________________________.
sublimation
freezing
melting
condensation
Adding heat to a substance decreases the kinetic energy of the particles within a substance, and makes them move closer to each other.
True
False
Particles in a gas have more kinetic energy than the same particles in a liquid state.
True
False