vocab
Vocab
Open Ended
Open Ended
NJ ASK
100
define boiling point and condensation
boiling point- the temperature at which a substance begins to change phases from liquid to gas condensation- the phase change in which a gas changes to a liquid;condensation releases heat energy into the surroundings
100
define solute and solution
solute- the substance dissolved by a solvent to form a solution solution- a mixture in which a solute is dissolved by a solvent; e.g, salt water and sugar water are solutions
100
Why do you think temperature is the "average" energy in the particles within a substance.
The greater the kinetic energy of the particles in motion, the faster they move, and the higher the temperature will be. Temperature increases with an increase in kinetic energy and decreases with a decrease in kinetic energy.
100
At what temp will 5kg of iron melt?
769 degrees c
100
Dr Bolzman wants to find the average energy of motion of the particles within a blovk of steel. What property of steel is he trying to find out?
D Temperature
200
density and deposition
density- the amount of mass in a given volume; density equals mass/volume deposition- the phase change in which a gas becomes a solid, by passing the liquid phase.
200
define solvent and sublimation
solvent- the substance that dissolves in a solute to form a solution sublimation- the phase change in which a solid becomes a gas by passing a liquid phase
200
What happens when you put a balloon in a freezer for one hour?
It will get very cold and slowly decrease
200
Suppose a ten ml graduated cylinder contains 40 ml of water. If you put a stone with the volume of ten centimeters to the third into the graduated cylinder, what will the water level rise to?
12 millileters
200
Lead has a density of 11.3 g/cm. What volume of lead has a mass of 226 g? What phase of matter has a definite volume but no definite shape?
C 20 cm B Liquid
300
define heat energy and mass
heat energy- the form of energy arising from the motion of all particles in a system; heat energy moves between things that are at different temperatures; also called thermal energy mass- the amount of matter in something
300
define temperature and vapor pressure
temperature- the measurement of the average energy of motion (heat energy) or the particles of matter in a substance vapor pressure- the pressure exerted by vapor
300
Write the term that refers to each pf the phases. A pot of water boils 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.
#1 vaporization #2 condensation #3 deposition #4 sublimation
300
What is the density of a cube with sides of 4 cm and a mass of 512 g? Aluminum has the average density of 2.7 g/cm3. Find the mass of a solid aluminum block with a volume of 30 cm3. A lead bar of 12 cm long, 2 cm wide, and 2 cm tall has a density of 11,3 g/cm3. If you cut the bar in half, what is the density of one of the halves?
The density of the cube in 8 cm. The mass is 2.7 g. The density is 1 and 5/6.
300
What process lets you see your breath when the air is cold? What object has the most density? A ball of aluminum, ice or lead.
B Condensation A the ball of ice
400
define melting point and phase
melting point- the temperature in which a substance begins to change phases between a solid and a liquid phases- 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
400
define vaporization
the phase change in which a liquid changes to a gas
400
Suggest why iron's melting point is so much higher than water's and why nitrogen's is still so much lower than both iron's and water's.
Nitrogen is artificial and iron is natural
400
In salt water which is the solute and which is the solvent? How much salt will be completely dissolved in 200 grams of water?
The solute is the salt and the solvent is the water. 71.4
400
How is sublimation different from vaporization, condensation and melting?
A it does not include a liquid phase
500
define physical change and solubility
physical change- change in physical properties of a substance, such as mass, volume, shape or density, without changing the substance itself solubility- the amount of substance that will dissolve in a given amount of another substance
500
define volume
the amount of space an object takes up
500
At sea level, water boils 100 degrees c. On top of Mt. Everest, water boils at 71 degrees c. Explain.
The air pressure is higher, therefore the boiling point becomes higher.
500
Estella investigatedthe properties of a grayish, shiny metal with a volume of 85 cubic centimeters (cm3) and a mass of 212.5 grams. What is the density?
B 2.5 g/cm
500
Allen adds sugar to a glass of water and sturs it for three minutes. At the end of his sturing, a small amount of sugar remains at the bottom. No matter how much he sturs, he cannot get more to dissolve. Suggest two ways he can get it to dissolve.
He can add more water or evaporate the water, leaving only the sugar.
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