chem ch 12

the force that will increase the speed of a 1 kg mass by 1 m per second each second that the force is applied

Newton (N)

A unit of pressure equal to a force of 1 N on an area of 1 m^2

Pascal (Pa)

What does STP stand for?

standard temperature and pressure

what is the standard atmosphere for stp

1

The kinetic-molecular theory states that particles of matter are in constant rapid, random motion. The average kinetic energy of random motion is _____ to temperature in kelvins. This means that heat ______ the energy of random motion of a gas.

Proportional, increases

Standard conditions for a gas at 0°C and 1 atm

Standard temperature and pressure (STP)

what is the standard kpa for stp

101.325

what is the regular kelvin temp for stp

273

what is the standard mmhg for stp

760

Although gases ______ dense, they ____ have mass, therefore in a gravitational field they also ____ weight. As gas particles are attracted by earth's gravity, they collide with each other and with earth's surface, creating _________. Pressure is the amount of force exerted per unit area of ____.

Are not, do, have, air pressure, surface

Air is ______ as you move closer to earth's surface because the weight of atmospheric gases at any elevation compresses the gases below them. At high altitudes, less dense air exerts _____ pressure.

Denser, less

According to the kinetic-molecular theory, gas particles travel relatively _____ distances before colliding with each other. These collisions with each other and the walls of their container result in _____. These collisions are perfectly elastic; energy is _____ trsferred from one particle to another

Long, pressure, completely

At sea level, the pressure necessary to maintain a mercury column in a barometer at a height of 760 mm

One standard atmosphere (atm)

What instrument is used to measure air pressure?

barometer

gases are considered _____ because their particles ____ move past each other easily and are thus able to flow. gas particles can be forced closer together by applying pressure to them, thus ____ their volume

fluids, can, decreasing

gases have unique properties because the distance between gas particles is much _____ than the particles of a liquid or solid. in contrast to liquids and solids, gases ____ fill their containers

greater than, completely

Gases have much ____ densities than liquids and solids. because of the ____ distance between gas particles, much of the space occupied by a gas is _____

lower, large, empty

force exerted per unit area

pressure