A person is driving on an extremely foggy day and cannot see the road ahead very well. They decide to turn on the headlights on the car. Even after turning on the headlights, the person cannot see the road ahead very well. Why does the light not help see through the fog?(1 point)
Responses
Fog is a heterogeneous mixture of water and air. It scatters light in all directions, which is why it is hard to see.
Fog is a heterogeneous mixture of water and air. It scatters light in all directions, which is why it is hard to see.
Fog is a homogeneous mixture of water and air. Homogeneous mixtures absorb light and do not let it pass.
Fog is a homogeneous mixture of water and air. Homogeneous mixtures absorb light and do not let it pass.
Fog is a homogeneous mixture of water and air. Homogeneous mixtures can be clear and easy to see through.
Fog is a homogeneous mixture of water and air. Homogeneous mixtures can be clear and easy to see through.
Fog is a heterogeneous mixture of water and air. The water will separate from the air when the light hits it, making it easier to see.
Fog is a heterogeneous mixture of water and air. It scatters light in all directions, which is why it is hard to see.
What of the following is an advantage of the thermal properties of plastic?(1 point)
Responses
Plastics are easy to mold into any shape.
Plastics are easy to mold into any shape.
Heating plastics eliminates the risk of BPA exposure.
Heating plastics eliminates the risk of BPA exposure.
The thermal conductivity of plastic is very high, making it a good material to transmit heat.
Plastics are easy to mold into any shape.
Which phase change is the opposite of boiling?(1 point)
Responses
evaporation
evaporation
condensation
condensation
freezing
freezing
melting
condensation
As the pressure of a gas decreases to half its original value, what happens to the volume of the gas if temperature is held constant?(1 point)
Responses
The volume decreases to one-fourth of its original value.
The volume decreases to one-fourth of its original value.
The volume increases to four times its original value.
The volume increases to four times its original value.
The volume increases to twice its original value.
The volume increases to twice its original value.
The volume decreases to half of its original value.
The volume decreases to half of its original value.
The volume increases to twice its original value.
There are 300 light particles in an airtight container. Which adjustment would increase the speed of the particles?(1 point)
Responses
keeping the volume constant and replacing the light particles with heavy particles
keeping the volume constant and replacing the light particles with heavy particles
keeping the pressure constant and increasing the temperature
keeping the pressure constant and increasing the temperature
keeping the volume constant and cooling the container
keeping the volume constant and cooling the container
keeping the temperature constant and increasing the container volume
keeping the pressure constant and increasing the temperature
The relationships among which variable quantities are expressed by the ideal gas law equation?(1 point)
Responses
pressure, volume, number of moles, mass
pressure, volume, number of moles, mass
volume, temperature, number of moles, gas constant
volume, temperature, number of moles, gas constant
pressure, volume, temperature, number of moles
pressure, volume, temperature, number of moles
pressure, volume, temperature, molar mass
pressure, volume, temperature, molar mass