Unit 3 Chem (chapter 5 Gases)

general properties of gas, gas pressure, and measuring gas pressure

Gases expand to fill their containers

What is the property of gases that allows them to occupy the entire volume of their container?

Compressibility of gases

What is the ability of gas particles to be pushed closer together when a force is applied?

Density of gases are relatively smaller compared to solods and liquids

How do the densities of gases compare to those of solids and liquids?

Miscibility of gases

What is it called when gases can be mixed to form homogenous mixtures in all proportions?

Viscosity of gases

What term describes the low resistance to flow exhibited by gases?

Gass pressure

What is the result of collisions between gas particles and the surface of their container called?

Pressure formula P= force/area

What is the formula that defines pressure?

SI unit for pressure 1Pa = 1N/m²

What is the SI unit for pressure, defined as 1 newton per square meter?

1 Standard atmosphere (atm)

What unit of pressure is defined as precisely 101,325 pascals?

barometer

What instrument measures atmospheric pressure, often using a column of mercury?

Barometer pressure equation: P=dhg

What equation expresses the pressure exerted by a fluid column in a barometer?

Inverse relationship of fluid density and height in a barometer

How does fluid density relate to the height of the fluid column in a barometer for a given pressure?

Closed-end manometer

What device measures gas pressure relative to a vacuum (zero Pressure)?

Gauge pressure

What term is used for the pressure of a system above atmospheric pressure?

volume of the container, the number of gas particles present, and the temperature.

the pressure of gas depends on a number of different factors, what are they?