What does the pressure exerted by a gas depend on?
Pressure depends on the force exerted by the gas on the container divided by the total surface area of the container.
Why do gas exert pressure short answers class 9?
The pressure exerted by a gas is due to the random motion of particles in the gas. Gases have weak intermolecular forces and the particles are in continuous random motion and these particles collide with the walls of the container. These collisions with the walls of the container exert pressure on the gas.
Why do you think the pressure is exerted by the gas on the walls of the container in all directions?
The kinetic molecular theory makes it easy to see why a gas should exert a pressure on the walls of a container. Any surface in contact with the gas is constantly bombarded by the molecules. At each collision, a molecule moving with momentum mv strikes the surface.
Does pressure of gas depend on mass?
So pressure is proportional to the number of moles of gas, not the mass of the gas. If you replace a given gas with one with double the molecular weight, for n to be the same, the mass of the replacement gas has to be double the mass. Yet the pressure is the same. Pressure is not dependent on mass.
What does gas pressure depend on Quizizz?
The pressure depends on the type of gas in the balloon. What happens to the temperature of a gas when it is compressed? The temperature increases.
What is pressure what it is unit on what factor does the pressure of gas depends?
Expert-verified answer The unit of pressure is Pascal (Pa). One pascal is equal to one newton per square metre. The pressure of a gas depends on the gaseous particles of matter, the temperature and the volume in the container.
Why do gases exert more pressure on the walls of the container than the solids Class 9?
In gases, the particles move randomly at high speed and they collide with each other and also with the walls of container. Thus, they exert . more pressure on the walls of container than solids.
Why does a gas exert pressure on the walls of the container class 9?
The moving particles in a gas collide with each other and also with the walls of the container and due to these collisions, Gases exert pressure on the walls of the container.
What property of gas is defined as the force exerted by the gas to the walls of its container?
At microscopic level, pressure is the force exerted by the gas molecules on the wall by virtue of momentum change during their elastic collision with the wall atoms.
Why gases exert pressure give an example?
When air is pumped into a bicycle tube by using a pump, the bicycle tube gets inflated due to the air pressure exerted by the collisions of gas molecules in air with the inner walls of the rubber tube. This air pressure in the bicycle tube makes the bicycle tyre feel hard.
Does the pressure depend on the mass of the particles explain?
The value of pressure and temperature does not depend on the amount of gas used in the measurement. The mass of the gas, on the other hand, does depend on the volume.
Why does increasing the temperature of a gas increase the pressure it exerts Quizizz?
Why does the pressure inside a container of gas increase if more gas is added to the container? There is an increase in the number of collisions between particles and the walls of the container. There is an increase in the temperature of the gas. There is a decrease in the volume of the gas.
What would not cause an increase in the pressure of a contained gas?
Which of these changes would NOT cause an increase in the pressure of a contained gas? The volume of the container is increased.
What are the two main factor that pressure depends on?
Solution : Pressure exerted on a body depends on two factors, (a) the force applied on the body and (b) the area over which force is exerted.
Does the pressure depend upon area on which the force is exerted?
pressure= force/area A solid resting on a horizontal surface exerts a normal contact force equals to its weight. The pressure of the solid on the surface depends on the area of contact. (b) the area of contact between the two surfaces. The greater the force or the smaller the area the greater the pressure.
Why does a gas exert pressure Why does a gas fill a vessel completely Why are gases so easily compressible whereas it is almost impossible to compress a solid or a liquid?
(c) Gases are easily compressible as they have large inter-molecular spaces. The gas particles can come closer when external pressure is applied on gases.
Why do gases exert more pressure than liquids?
Answer. Gases exert more pressure on the walls of the container in which they are kept than liquids as they have less inter particular forces of attraction. So they hit the walls and apply more force.
How do liquids and gases exert pressure class 8?
When we pour liquid into a vessel, then the weight of liquid pushes down on the base of the vessel producing a pressure. The liquid exerts pressure on the base of the vessel. The pressure exerted by a liquid changes with depth in the liquid.
When gas exerts pressure on its container the pressure is quizlet?
Gas exerts pressure on the walls of its container because the particles collide with the wall. What happens to the temperature in gases? If the gas gets hotter, the pressure will be bigger. If the gas gets cooler, the pressure will be smaller.
Is the pressure of a gas independent of its temperature?
The pressure of a given amount of gas is directly proportional to its absolute temperature, provided that the volume does not change (Amontons's law). The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law).
Why do gases exert pressure on a surface?
Gas pressure is caused by the force exerted by gas molecules colliding with the surfaces of objects (Figure 1). Although the force of each collision is very small, any surface of appreciable area experiences a large number of collisions in a short time, which can result in a high pressure.
What is gas pressure class 8?
The pressure of a gas is the stress on the walls of its container that the gas exerts. The envelope opens as you blast air into a balloon, so the pressure of the air molecules on the interior of the balloon is higher than on the outside.
Do gases also exert pressure class 8?
Solution : Yes, liquid and gas also excrete pressure.
Is pressure dependent on temperature?
Pressure, Volume, Temperature, Moles The force exerted by the particles per unit of area on the container is the pressure, so as the temperature increases the pressure must also increase. Pressure is proportional to temperature, if the number of particles and the volume of the container are constant.
How does increasing the number of particles in a gas affect the pressure?
Summary. An increase in the number of gas molecules in the same volume container increases pressure. A decrease in container volume increases gas pressure. An increase in temperature of a gas in a rigid container increases the pressure.
When the pressure and the amount of gas are constant the volume increases as temperature?
These examples of the effect of temperature on the volume of a given amount of a confined gas at constant pressure are true in general: The volume increases as the temperature increases, and decreases as the temperature decreases.
What happens to gas when pressure increases?
As the pressure on a gas increases, the volume of the gas decreases because the gas particles are forced closer together. Conversely, as the pressure on a gas decreases, the gas volume increases because the gas particles can now move farther apart.
What pressure depends on class 8?
Answer: Pressure is force unit per area. Pressure depends on two factors: The magnitude of force applied – the greater the force, the greater is its effect. The area over which the force is applied, i.e. the area of contact between the two objects.
Is pressure dependent on density?
Density is directly proportional to pressure and indirectly proportional to temperature. As pressure increases, with temperature constant, density increases. Conversely when temperature increases, with pressure constant, density decreases.
Is pressure independent of area?
Thus, pressure P in fluid is independent of cross-section area.