Molecules & Matter- Gas Pressure Flashcards
The ________ of a gas is caused by random particles hitting the container or surfaces.
The pressure of a gas is caused by random particles hitting the container or surfaces.
Increasing the temperature of a contained gas increases ________ as the particles
move ______.
Increasing the temperature of a contained gas increases pressure as the particles
move faster
B________ m_____ is the random movement of particles can be seen in smoke.
Brownian motion is the random movement of particles can be seen in smoke.
Pressure _________ if volume _________ at a constant temperature.
Pressure increases if volume decreases at a constant temperature.
For a fixed mass of gas held at a constant temperature: ________ x _______=
constant ρv=constant
For a fixed mass of gas held at a constant temperature: pressure x volume =
constant ρv=constant
how can we increase the pressure of a gas
by increasing the number of collisions per second or the energy of each collision
what is the temperature of a gas related to
the average kinetic energy of the particles
what happens to the particles of a gas at low temperatures
they have lower kinetic energy, meaning there are fewer collisions per second. These are lower energy collisions
what happens to the particles of a gas at a high temperature
they have higher kinetic energy, meaning more collisions per second. these are higher energy collisions
low temperature = ___ pressure
_____ temperature = high pressure
low temperature = low pressure
high temperature = high pressure
what do the particle collisions cause
a force which acts at right angles to the walls of the gas container. this causes the gas pressure
how do we reduce the pressure
by taking the same gas and increasing the volume of the container while keeping the temperature constant
