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Definitions
Definitions
Definintions
Questions
NJ Ask Practice
100
what is boiling point
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 solvent to form a solution.
100
what is vapor pressure
the pressure exerted by a vapor
100
write the term for each phase change. a pot of water boils away on a stove, water forms frost on a window, water vapor in a cloud turns to rain, and ice in Antarctica goes into the atmosphere.
the first is vaporization, second is deposition, third is condensation, and fourth is sublimation.
200
what is condensation
the phase change in which a gas changes into a liquid.
200
what is melting point
the temperature in which a substance begins to change phases from solid to liquid.
200
what is a solution
a micture in which a solute is dissolved by a solvent.
200
what is vaporization
the phase change from liquid to gas.
200
at sea level water boils at 100 degrees Celsius. On top of mount. Everest water boils at 71 Celsius. explain the difference.
there is less air pressure as go higher up with altitude.
300
What is density
the amount of mass in a given volume.
300
what is phase
a state of matter.
300
what is a solvent
the substance that dissolves a solute to form a solution.
300
what is volume
the amount of space an object takes up.
300
if 10 kilograms of iron melts at 1538 degrees Celsius, at what temperature will 5 kilograms of iron melt?
It is going to boil at the same temperature.
400
what is deposition
the phase change in which a gas turns into a solid.
400
what is physical change
change in physical properties of a substance.
400
what is sublimation
the phase change from solid to gas.
400
why do you think temperature is the measure of the average energy of motion of all the particles in a substance?
temperature is a measure of the average energy of motion because particles move at different speeds.
400
suppose a 100 milliliter graduated cylinder contained 40 milliliters of water. if you put a stone with a volume of 12 centimeters cubed into the graduated cylinder what will the water level rise to?
it is going to rise 52 mL
500
what is heat energy
the form of energy rising from the motion of all the particles in a system.
500
what is solubility
the amount of a substance that will dissolve in a given amount of a given substance.
500
what is temperature
the measurement of the average energy of motion of the particles of matter in a substance.
500
suppose you inflate a balloon at room temperature and put in a freezer and come back an hour later.
the balloon will be deflated.
500
in salt water what is the solute, and what is the solvent.
water is the solvent, and the solute is the salt.