boiling point- temp at which liquid starts to form into a gas
condensation- phase which a gas turns into a liquid
100
define solute and solution
the substance dissolved by a solvent to form a solution
a mixture in which s solute is dissolved by a solvent
100
why is temperature the "average" energy of motion of all particles in a substance
because it measure more than one, the overall average
100
if 10 kg of iron melts at 1538 degrees, what will 5 kg melt at
1538
100
1. what is the density of a metal with a volume of 85 cubic centimeters and a mass of 212.5 grams?
b. 2.5 g/c^3
200
define density and deposition
density- the amount of mass in a given volume
deposition- change in which a gas becomes a solid, skipping the liquid phase
200
define solvent and sublimation
the substance that dissolves a solute to form a solution
the phase change in which a solid becomes a gas, bypassing the liquid phase
200
what would happen if you put a room temperature balloon in the freezer for an hour
it would slowly deflate
200
if you add 12 ml of water to 40 ml of water in a 100 ml graduated cylinder,where will the level rise to
52 mL
200
2. what is the average energy of motion of particles?
d. temp
300
define heat energy and mass
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
the amount of matter in a substance
300
define temperature and vapor pressure
the measurement of the average energy of motion (heat energy) of the particles of matter in a substance
the pressure exerted by a vapor
300
is each sublimation or deposition?
a pot of water boiling on a stove
water vapor forming frost on a window
water vapor turns clouds to rain
ice in Antarctica goes directly into the atmosphere
sublimation
deposition
deposition
sublimation
300
3. lead has a density of 11.3 g/cm. what volume of lead has a mass of 226 grams
c. 20 cm^3
400
define melting point and phase
melting point- the point at which a solid becomes a liquid
phase-different states ex:matter (solid, liquid, gas, plasma)
400
define vaporization
the phase change in which a liquid changes into a gas
400
why is iron's melting point higher than water's and why nitrogen's is so low
nitrogen is weaker because the attraction is weaker and iron is stronger
400
4. what matter has a definite volume but no definite shape
5. what process lets you see your breath when the air is cold
b. liquid
b. condensation
500
define physical change and solubility
when matter changes from one phase to another
the amount of a substance that will dissolve in a given amount of another substance
500
define volume
the amount of space an object or substance takes up
500
why does water boil at 100 degrees at sea level and 72 on the top of Mt. Everest
air pressure decreases with altitude so vapor pressure at which water boils increases
500
6. (see page 94)
what object has the lowest density
7. how is sublimation different than vaporization, condensation and melting?
8. how could you get rid of a small amount of sugar that won't dissolve at the bottom of a glass by stirring?
a. the ball of ice
a. sublimation doesn't include a liquid phase
add more water