Podcast
Questions and Answers
What happens when a substance is heated?
What happens when a substance is heated?
- The atoms/molecules spread further apart and the volume decreases.
- The atoms/molecules lose energy and move slower.
- The atoms/molecules get closer together and the volume increases.
- The atoms/molecules gain energy and move faster. (correct)
What is the relationship between temperature and the speed of atoms/molecules?
What is the relationship between temperature and the speed of atoms/molecules?
- Temperature has no relationship to the speed of atoms/molecules.
- Temperature is a measurement of the average speed of atoms/molecules. (correct)
- The slower the atoms/molecules move, the higher the temperature.
- The faster the atoms/molecules move, the lower the temperature.
What happens to the volume of a substance when it is cooled?
What happens to the volume of a substance when it is cooled?
- The volume increases as the atoms/molecules gain energy and move faster.
- The volume stays the same as the atoms/molecules do not expand or shrink.
- The volume increases as the atoms/molecules spread further apart.
- The volume decreases as the atoms/molecules get closer together. (correct)
How do the collisions of atoms/molecules change when a substance is warmed?
How do the collisions of atoms/molecules change when a substance is warmed?
What is the relationship between temperature and the movement of atoms/molecules?
What is the relationship between temperature and the movement of atoms/molecules?
An increase in the number density of gas particles will result in higher pressure.
An increase in the number density of gas particles will result in higher pressure.
In a gas, the mean free path decreases as the pressure increases.
In a gas, the mean free path decreases as the pressure increases.
Gaseous particles move slower and collide less frequently as the temperature increases.
Gaseous particles move slower and collide less frequently as the temperature increases.
At low pressures, like those found in outer space, the mean free path of gas particles is typically small.
At low pressures, like those found in outer space, the mean free path of gas particles is typically small.
The ideal gas law is not relevant for describing the relationship between the number density of gas particles and pressure.
The ideal gas law is not relevant for describing the relationship between the number density of gas particles and pressure.
Gases exhibit an increase in viscosity with increasing temperature.
Gases exhibit an increase in viscosity with increasing temperature.
In gases, diffusion occurs at a slower rate compared to liquids.
In gases, diffusion occurs at a slower rate compared to liquids.
Intermolecular forces have no role in determining the behavior of gaseous particles.
Intermolecular forces have no role in determining the behavior of gaseous particles.
Hydrogen bonding does not lead to unique behaviors in gases.
Hydrogen bonding does not lead to unique behaviors in gases.
Gaseous particles cannot interact with electromagnetic radiation.
Gaseous particles cannot interact with electromagnetic radiation.
