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On the molecular level pressure is caused by individual gas molecules interacting with the surfaces of a container. Pressure is defined as force per unit area, so in the most basic level pressure can increase with an increase in force applied to the container or a decrease in area the molecules are interacting with. The decrease in area can be from a smaller container, or an increase in force can be from an increase in the velocity of the molecules. This increase in velocity is usually due to an increase in energy (typically heat).

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15y ago
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7mo ago

Gas pressure is caused by the constant collisions of gas molecules with the walls of their container. These collisions create a force per unit area on the container walls, which is what we perceive as pressure. The more molecules in a given volume and the higher their average speed, the greater the pressure exerted by the gas.

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Q: On the molecular level what causes gas pressure?
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Related questions

What causes a pressure in a gas?

Heat. The addition of heat causes expansion and spreading of the molecules which in turn causes an increase in pressure.


Is an increase in gas pressure a result of an increase in molecular collisions?

ture


Is the Volume gas directly proportional to its molecular weight?

No, the volume of a gas is not directly proportional to its molecular weight. The volume of a gas is mainly influenced by the number of gas molecules present, temperature, and pressure. The ideal gas law equation, PV = nRT, takes into consideration these factors to describe the relationship between volume, pressure, temperature, and the amount of gas.


Is an increase in gas pressure the result of an increase in molecular collisions?

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What is the effect of temperature and pressure on a gas?

Increased molecular activity / heat / instability


Why do you think more pressure on a gas causes the volume of the gas to decrease?

Increased pressure causes the gas molecules to come closer together, thus the volume also decreases.


What are the Kinetic Molecular Theory effects on the pressure and volume of the gas sample?

According to the Kinetic Molecular Theory, pressure is the result of gas molecules colliding with the walls of the container. As the volume of the gas sample decreases, the frequency of collisions increases, leading to an increase in pressure. Conversely, as the volume increases, the frequency of collisions decreases, leading to a decrease in pressure.


What cause the pressure by gas molecules on their container?

What causes the pressure exerted by gas molecules on their container? idk


How do you find molecular mass if specific volume is given?

To find the molecular mass if specific volume is given, you can use the ideal gas law. The ideal gas law relates the pressure, volume, temperature, and the number of moles of gas to the gas constant. By rearranging the ideal gas law equation and solving for the molecular mass, you can determine the molecular mass of the gas.


Describe the changes in gas pressure?

The increase in solubility causes increase in pressure.


What causes has pressure?

The answer depends on what kind of pressure. If you mean the pressure exerted by gasses on the walls of a container (a balloon, for example), pressure is created by the motion of the molecules of gas. Temperature and density of the molecules are factors. Higher density results in higher pressure. Higher temperature creates more molecular motion, thereby creating higher pressure.


What would have happened to the gas if the molecular collisions were not elastic?

If molecular collisions were not elastic, then some of the kinetic energy would be lost in each collision, leading to an overall loss of energy in the gas. This would result in a decrease in temperature and pressure of the gas over time as the molecules lose energy.