The temperature at which a substance begins to change phases from liquid to gas.
100
What is mass?
The amount of matter in something.
100
what is a solute?
The substance being dissolved to form a solution.
100
Why do you think temperature is the measure of the "average" energy of motion of all the particles in a substance?
Temperature is the average of the motion because the matter moves at different speeds whether a solid liquid or gas.
100
Ice in Antarctica goes directly into the atmosphere. What word goes well with this?
sublimation
200
What is condensation?
The phase change in which a gas changes to a liquid
200
What is melting point?
The temperature when a solid becomes a liquid.
200
what is a solution?
a mixture in which a solute is dissolved by a solvent.
200
suppose you inflate a balloon at room temperature, put the balloon in a freezer and come back an hour later. What do you think the balloon will look like?
The balloon will deflate because the particles will slow down and clump together because of the cold and make the ballon shrivel.
200
Why is iron's melting point higher than water's?
Iron's melting point is higher than water's because the attraction of atoms is stronger than water's.
300
What is density?
The amount of mass given in as volume
300
What is phase?
A state of matter.
300
what is a solvent?
the substance dissolving the solute.
300
A pot of water heats on a stove. What term will go well to this?
Evaporation
300
Why is nitrogen's melting point so much lower than iron and water?
It is lower because the atoms attraction is much weaker.
400
What is deposition?
The phase change in which a gas becomes a solid, bypassing the liquid phase.
400
what is a Physical Change?
A change in physical properties such as mass, shape, volume, and density, without changing the substance at all.
400
what is sublimation?
the phase in which a solid becomes a gas
400
Water vapor forms on a window. What word goes well with this?
deposition
400
at sea level,water boils at 100 degrees C. on top of Mt. Everest, water boils at 71 degrees C. Explain the difference.
Air pressure decreases with altitude so water vapor pressure at which water boils also decreases as altitude increases.
500
What is heat energy?
The form of energy arising from the motion if all the particles in a system.
500
what is solubility?
the amount of substance that will dissolve in a given amount of another substance.
500
What is temperature?
the measurement of the average energy motion (heat energy) of the particles of matter in a substance
500
Water vapor in a cloud. What word goes well with this?
condensation
500
What is the density of a cube with sides of 4cm and mass of 512 g?