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 solute
The substance dissolved by a solvent to form a solution.
100
what is vapor pressure
The pressure exerted by a vapor.
100
What is the density of the substance?
2.5 g/cm3
200
what is condensation
the phase change in which a gas changes to a liquid;condensation releases heat energy to the surroundings
200
what is melting point
the temperature at which a substance begins to changes phases from solid to liquid
200
what is Solution
A mixture in which a solute is dissolved by a solvent ; e.g., salt water and sugar water are solution.
200
what is vaporization
The phase changes in which a liquid changes to a gas.
200
What property of the steel is Dr. Boltzmann trying to find?
Temperature
300
what is density
the amount of mass in a given volume
300
what is a phase
a state of matter;one of the different shapes of the Moon as it progresses through a one-month cycle, as seen from the Earth
300
what is solvent
The substance that dissolves a solute to form a solution.
300
A pot of water boils away on a heated stove.
zaporization
300
What volume of lead has a mass of 226 g?
20 cm3
400
what is deposition
the phase change in which a gas becomes a solid, bypassing the liquid phase; the placement of sediment to produce land forms
400
what is a physical change
change in physical properties of a substance, such as mass, volume, shape, or density, without changing the substance itself
400
what is sublimation
The phase change in which a solid becomes a gas, bypassing the liquid phase.
400
Water vapor forms frost on a window
deposition
400
What phase of matter has a definite volume but no definite shape?
Liquid
500
what is heat energy
the form of energy arising from the motion of all the particles in a system; heat energy moves between things that are at different temperatures; also called thermal energy
500
what is solubility
the amount of a substance that will dissolve in a given amount of another substance
500
what is temperature
The measurement of the average energy of motion (heat energy) of the particles of matter in a substance.
500
Water vapor in a cloud turns into rain
condensation
500
What process lets you see your breath when the air is cold?