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Defintions
Definitions
Definitons
Questions
NJ Ask
100
What is boiling point?
What is the temperature at which a substance begins to change phases from liquid to gas
100
What is mass?
What is the amount of matter in something
100
What is 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 temperature is the average energy of motion of all the particles in a substance because particles move in different speeds.
100
What phase of matter has a definite volume but no definite shape?
What is gas
200
What is Condensation?
What is the phase change in which a gas changes into a liquid;condensation releases heat energy to the surroudings
200
What is melting point?
What is the temperature at which a substance begins to change phases from solid to liquid
200
What is solution?
What is a mixture in which a solute is dissolved by a solvent e.g., salt water and sugar water solvents
200
suppose you inflate a balloon at room temperature, out the balloon into a freezer, and come back an hour later. What will the balloon look like?
What is the balloon will deflate because the particles will clump together and make the balloon shrivel up.
200
What process lets you see your breath when the air is cold?
What is condensation?
300
What is density?
What is the amount of mass in a given volume (density=mass over volume)
300
What is a phase
What is a state of matter; one of the different shapes of the moon as it progresses through a one-month cycle, as seen from Earth
300
What is sublimation?
What is the phase change in which a solid becomes a gas, bypassing the liquid phase
300
define the term that coralates with each phrase, vaporaztion, deposition, condensation, and sublimation. a pot of water boils away on a heated stove. Water vapor forms frost on a window. Water vapor in a cloud turns into rain. Ice in Antarctica goes directly into the atmosphere.
What is vaporazation, deposition, condensation, and sublimation.
300
Dr. Boltzmann wants to find the average energy of motion of the particles within a block of steel. What property of the steel is Dr. Boltzmann trying to find?
What is temperature?
400
What is deposition?
What is 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 physical change?
What is a change in physical properties of a substance, such as mass, volume, shape or density without changing the substance itself.
400
What is temperature?
What is the measurement of the average energy of motion (heat energy) of the particles of matter in a substance?
400
suggest why iron's melting point is so much higher than water's, and why nitrogen's is so much lower than both iron's and water's
What is irons melting point is higher than waters because the attraction of iron atoms is stronger than waters, nitrogen's melting point is lower than iron and water because the attraction is weaker.
400
Estella investigated the properties of a grayish, shiny metal with a volume of 85 cubic centimeters and a mass of 212.5 grams what is the density of the substance?
What is 2.5 g/cm cubed.
500
What is heat energy?
What is 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?
What is the amount of a substance that will dissolve ina given amount of another substance?
500
What is vapor pressure?
What is the pressure exerted by a vapor
500
at sea level, water boils at 100 degrees celsius. ON top of Mount Everest, water boils at 71 degrees celsius. Explain the difference. (hint: how does air pressure change with altitude?)
What is What is air pressure decreases with altitude so vapor pressure at which water boils also decreases as altitude increases.
500
Lead has a density of 11.3 g/cm cubed. what volume od lead has a mass of 226 g.
What is 20 cm cubed.