szymanski ch 9
Terms in this set (60)
Matter that has a definite volume and a definite shape is a
Matter in which the particles are free to move in all directions until they spread evenly throughout their container is a
The state of matter in the sun and other stars is primarily a
Matter that has a definite volume and no shape is a
electrons bump into atoms and other electrons
Heat transfer by conduction in metals occurs when
large numbers of atoms move from place to place
Heat transfer by convection occurs when
Heat travels from sun to Earth by
Energy transfer by convection is primarily restricted to
reflect a lot of energy
The reason light-colored clothes help keep you cool in warm weather is that clothes of light color
the temperature difference between an object and its surrounding
Newton's law of cooling says that rate of cooling depends on
Global warming by the greenhouse effect mostly results from the fact that an atmosphere with excess carbon dioxide is less transparent to
Long wavelength radiation is absorbed by the atmosphere
Radiation from the sun often gets trapped in Earth's atmosphere. The reason for this is that
cool air over the shore rises and warmer air from the ocean takes its place
At night, a sea breeze results when
a warming process
Evaporation is a cooling process and condensation is
to keep their skin wet so evaporation can occur
Pigs roll in the mud
gas to liquid
Condensation occurs when matter changes from a
The summer day
On which day will the amount of water vapor in the air be greater, a summer day at 100 % humidity or a winter day at 100 % humidity?
it turns to vapor at the bottom of or in the liquid
A liquid boils when
At high altitudes, the boiling point of water
liquid to a solid
Freezing occurs when matter changes from a
gives off energy
When water freezes, it
When snow forms in clouds, the surrounding air
When water vapor condenses on the inside of a window, the window becomes
stays the same
When heat is added to boiling water, the temperature of the boiling water
In order to walk barefoot on hot coals without harming your feet, less energy would get your feet
How much energy is released when 1 gram of steam condenses to water at 100o C?
melt a solid
A material's heat of fusion gives the amount of energy needed to
true or false:Heat transfer by means of atoms moving from place to place is conduction.
true or false:Winds and weather patterns are good examples of convection currents.
true or false:Materials that are good heat conductors are insulators.
true or false:A good reflector of heat is a poor absorber of heat.
true or false: The rate of cooling of an object is proportional to the temperature difference between the object and its surrounding.
true or false: The process of changing from a liquid to a gas is condensation.
true or false: It is possible for a thin wire suspended between heavy weights to pass through a block of ice.
true or false: When steam changes to water at 100oC, energy is absorbed.
true or false: When ice changes to water at 0oC, energy is absorbed.
true or false: Energy needed to change a material from solid to liquid is called the heat of vaporization of that material.
true or false: The three common phases of matter are volume, density, and mass.
true or false: Sometimes evaporation takes place at the bottom of a liquid. This process is boiling.
true or false: Particles that make up a solid are packed very close together.
true or false: Water molecules have a more orderly arrangement in liquid water than in ice.
true or false: The energy absorbed by one gram of water as it changes from its liquid phase into water vapor is known as the heat of vaporization for water.
true or false: When liquid water freezes, the average kinetic energy of its molecules increases.
true or false: The temperature at which a substance freezes is lower than the temperature at which it melts.
solid to liquid
liquid to gas
solid to gas
gas to liquid
liquid to solid
gas to solid
Building blocks of matter are
Which of the following groups of matter are classified according to their makeup? A.periods, groups, families, plasma
b. elements, liquids, compounds, solutions
c. solids, liquids, gases, plasma
d. elements, compounds, mixture, solutions
The simplest type of a pure substance is a(an)
is made of only one kind of material having definite properties
A compound is a pure substance because it
An example of a homogeneous mixture is
A solution is
a. chemically combined
b. chemically very different from the substances that make it up
c. a type of homogeneous mixture
d. is made of only one kind of material having definite properties
a solution of gases
An alloy is a
A molecule is
An example of heterogeneous mixture is
Keep most of their properties
The substances that make up a mixture
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