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Review Questions
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100
Define boiling point.
What is the temperature at which a substance begins to change phases from liquid to gas?
100
Define mass.
What is the amount of matter in something.
100
Define solute.
What is the substance dissolved by a solvent to form a solution?
100
Why do you think temperature is the measure of the "average" energy of motion of all the particles within a substance?
What is the temperature measure the average of the energy of motion of the particles because not all particles of a substance have the same energy of motion. The particles almost certainly have different speeds depending on the substance some particles may have more mass than other particles.s For these reasons, the particles do not all have the same energy of motion scientists find the average energy of motion.
100
Estella investigated the properties of a grayish, shiny metal with a volume of 85 cubic centimeters (cm^3) and a mass of 212.5 grams (g). What is the density of the substance?
What is 2.5 g/cm^3?
200
Define condensation.
What is the phase change in which a gas changes to a liquid; condensation releases heat energy to the surroundings.
200
Define melting point?
What is the temperature at which a substance begins to change phases from solid to liquid?
200
Define solution.
What is a mixture in which a solute is dissolved by a solvent?
200
Suppose you inflate a balloon at room temperature, put the balloon into a freezer, and come back an hour later. What will the balloon look like?
What is the balloon will shrivel up and deflate because when filled with gas, the gas moves rapidly. When it gets cold, it doesn't move as quickly.
200
Dr. Boltzmann wants to find the average energy of motion of the particles within a block of steel. What property of the steel Dr. Boltzmann trying to find?
What is temperature?
300
Define density.
What is the amount of mass given volume?
300
Define phase.
What is a state of matter?
300
Define sublimation.
What is the phase change in which in which a solid becomes a gas, bypassing the liquid phase?
300
Write the term that refers to this change of phase- A pot of water boils away on a heated stove.
What is vaporization?
300
Lead has a density of 11.3 g/cm^3. What volume of lead has a mass of 226 g?
What is 20 cm^3?
400
Define deposition.
What is the phase change in which a gas becomes a solid, bypassing the liquid phase?
400
Define physical change.
What is change in physical properties a substance, such as mass, volume, shape, or density, without changing the substance itself?
400
Define temperature.
What is the measurement of the average energy of motion ( heat energy ) of the particles of matter in a substance?
400
Write the term that refers to this change of phase- Water vapor forms frost on a window.
What is deposition?
400
What phase of matter has a definite volume but no definite shape?
What is liquid?
500
Define heat energy.
What is the form of energy arising from the motion of all the particles in a system?
500
Define solubility.
What is the amount of a substance that will dissolve in a given amount of another substance?
500
Define vapor pressure.
What is the pressure exerted by a vapor?
500
Write the term that refers to this change of phase- Water vapor in a cloud turns into rain.
What is condensation?
500
What process lets you see your breath when the air is cold?
What is condensation?