definitions
definitons
definitons
questions
njask 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 a solvent to form a solution
100
What is vaporization
pot of water boils away on heated stove
100
What is the density of the substances with a volume of 85 cubic cm
2.5 gm/cm3
200
what is condensation
the phase change in which a gas changed into a liquid
200
what is melting point
the temperature at which a substance begins to change phases from solid to liquid
200
what is solution
a mixture in which a solute is dissolved by a solvent
200
What is deposition
Water vapor forms from frost on a window
200
What property of the steel is Dr. Boltsmann trying to find?
The temperature
300
what is density
the amount of mass in a given volume
300
what is phase
a state of matter one of the different shapes of the moons as it progresses through a one-month cycle
300
what is solvent
the substance that dissolves a solute to form a solution
300
what is condensation
Water vapor in a cloud turns into the atmosphere
300
What phase of matter has a definite volume but no definite shape
Liquid
400
what is deposition
the phase change in which a gas becomes a solid, by passing the liquid phase
400
what is physical change
change in physical properties of a substance
400
what is sublimation
the phase change in which a solid becomes a gas, bypassing the liquid phase
400
Why is ions melting point higher than waters?
It's higher because the attraction of iron atom is stranger than water
400
What is the volume of lead that has a mass of 226 gm and 11.3 g/cm3
20 cm3
500
what is heat energy
the form of energy arising 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 another substance
500
what is temperature
the measurement of the average energy of motion of the particles of natter in a substance
500
Why does air pressure decrease with altitude
Air pressure decreases with altitude so vapor pressure at which water boils also decreases an altitude increases
500
What process lets you see your breath when the air is cold
condensation
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