What happens as a result of kinetic energy of the particles in a liquid being comparable with the intermolecular attractions between the particles?
What happens as a result of the kinetic energy of the particles in a liquid being comparable with the intermolecular attractions between the particles? The particles move enough that they are not fixed in place, and the liquid can flow. They have enough kinetic energy to easily slide by each other.
Which statement best explains why heating a liquid affects its viscosity?
Which statement best explains why heating a liquid affects its viscosity? The molecules move faster at higher temperatures and overcome attractions more easily.
What does kinetic molecular theory tell us about the effect of temperature on the motion of particles?
According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often. Increasing the kinetic energy of the particles will increase the pressure of the gas.
Which two conditions can limit the usefulness of the kinetic molecular theory describing gas behavior?
The high pressure and the low temperatures are the two conditions, which can restrict the effectiveness of the kinetic-molecular theory in illustrating the behavior of the gas.
Which two conditions can limit the usefulness of the kinetic molecular theory in describing gas?
Which two conditions can limit the usefulness of the kinetic-molecular theory in describing gas behavior? high pressure and low temperatures.
Which two conditions can limit the usefulness of the kinetic?
The two conditions that can limit the usefulness of the kinetic-molecular theory in describing gas behavior are “high pressure” and “low temperatures”. At low temperatures or high pressures, real gases deviate significantly from ideal gas behavior.
Which best explains why a crystal is incompressible?
Which best explains why a crystal is incompressible? Its molecules remain in position without vibrating. The molecules of a crystal behave like those of a gas.
What indicates that the kinetic molecular theory has limited use for describing a certain gas?
They are made up of hard spheres that are in random motion. Which observation indicates that the kinetic-molecular theory has limited use for describing a certain gas? Increasing pressure is causing a smaller change in gas volume. This is a limitation of the kinetic-molecular theory.
Does hydrogen sulfide or ammonia have a higher effusion rate?
Answer: The molar mass of H2S is greater than the molar mass of NH3, making the velocity and effusion rate of NH3 particles faster. Effusion rate is inversely proportional to molar mass. NH3 will have a higher average molecule velocity, so it will diffuse faster and will reach the other side of the room more quickly.
Which statement can best be concluded from the ideal gas law?
Which statement can best be concluded from the ideal gas law? The product of pressure and volume of an ideal gas is proportional to the absolute temperature.
Which molecules would most likely cause a liquid to have the lowest viscosity?
When molecules of a liquid are small then it becomes easy for them to flow whereas when molecules are polar then they tend to form hydrogen bonding which makes the liquid more viscous. Therefore, small and non-polar molecules would most likely cause a liquid to have the lowest viscosity.
What happens when a solid is dissolved into liquid?
What happens when a solid is dissolved into a liquid? Solid particles become suspended in the middle of liquid particles. solid particles become evenly dispersed among liquid particles. The particles in water have less mobility than the particles in oxygen.
Which statement best explains why liquids flow?
Answer: Why do liquids flow explain? Liquids flow because the intermolecular forces between molecules are weak enough to allow the molecules to move around relative to one another. In liquids, the intermolecular forces can shift between molecules and allow them to move past one another and flow.
Which step will decrease the pressure of a gas inside a closed cubical container?
Answer Expert Verified. Decreasing the temperature will decrease the pressure of a gas inside a closed cubical container.
When you squeeze an air filled balloon on all sides what happens inside?
When you squeeze an air-filled balloon on all sides, what happens inside? The air molecules move closer together. Detectors in the walls of four containers (A-D) count the number of collisions between gas molecules and the surfaces of the containers.
Which sequence represents the relationship between temperature and volume?
So, the sequence is complete: higher temperature → higher kinetic energy (higher speed) → more space → more volume.
Which statement describes a limitation of the kinetic-molecular theory for a gas quizlet?
Terms in this set (12) Which statement describes a limitation of the kinetic-molecular theory for a gas? The theory assumes that particles do not experience intermolecular forces. The theory states that pressure is inversely proportional to volume.
Which statement is a postulate of the kinetic molecular theory of gases quizlet?
What is a postulate of the kinetic molecular theory of gases? The particles that compose a gas are so small compared to the distances between them that the volume of the individual particles can be assumed to be negligible.
Which example involves a phase change in which heat?
Which example involves a phase change in which heat energy is released by the substance? freezing ice cream cooking a pot of soup melting ice under sunlight watching frost disappear into air.
What change of phase involves heat release?
Hence, fusion, vaporization, and sublimation are all endothermic phase transitions. For phase transitions involving the forming of intermolecular attractions, heat is released and ΔH is negative, because the system is going from a higher-enthalpy phase to a lower-enthalpy phase, as shown in Figure 4.
At what temperature does the solid start melting?
At what temperature will a solid melt answers?
At temperatures above 32°F (0°C), pure water ice melts and changes state from a solid to a liquid (water); 32°F (0°C) is the melting point. For most substances, the melting and freezing points are about the same temperature.
What happens when the temperature of a solid reaches its melting point?
There is a special temperature for every substance called the melting point. When a solid reaches the temperature of its melting point, it can become a liquid. The reverse of the melting process is called freezing. Liquid water freezes and becomes solid ice when the molecules lose energy.
What happens when solid melts?
When a solid is heated the particles gain energy and start to vibrate faster and faster. At this point the solid is melting to form a liquid. The particles in the liquid are the same as in the solid but they have more energy.
What will happen if the beaker is heated until the wax melts?
Show the pupils the beaker containing the mixture of gravel and chopped candlewax before heating; ask what will happen if the beaker is heated until the wax melts. Most will realise that the gravel will sink to the bottom to form a mixed gravel/wax layer, whilst pure wax will flow to the top to form another layer.
When a solid melts does it absorb or give off heat?
From left to right, heat is absorbed from the surroundings during melting, evaporation, and sublimation. Form right to left, heat is released to the surroundings during freezing, condensation, and deposition.