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.
The thermal conductivity of plastic is very high, making it a good material to transmit heat.
The thermal conductivity of plastic is very high, making it a good material to transmit heat.
Plastics are safe to use in microwave ovens.
Plastics are safe to use in microwave ovens.
Heating plastics eliminates the risk of BPA exposure.
The correct answer is: Plastics are safe to use in microwave ovens.
Which phase change is the opposite of boiling?(1 point)
Responses
freezing
freezing
melting
melting
condensation
condensation
evaporation
The correct answer is: 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 half of its original value.
The volume decreases to half 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 one-fourth of its original value.
The correct answer is: 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 temperature constant and increasing the container volume
keeping the temperature constant and increasing the container volume
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
The correct answer is: 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, temperature, number of moles
pressure, volume, temperature, number of moles
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, molar mass
The correct answer is: pressure, volume, temperature, number of moles.
Which statement best describes what it means when something is classified as a strong acid?(1 point)
Responses
It is present in large quantities in a solution.
It is present in large quantities in a solution.
It easily dissociates into ions in solution.
It easily dissociates into ions in solution.
It resists dissociating into ions in solution.
It resists dissociating into ions in solution.
It is present in low quantities in a solution.