Chem Ch. 11

Measures the speed or energy of particles?

Temperature

Measure of the impact of particles on a surface?

Pressure

As the pressure inside a container increases, the volume will?

Increase

As the pressure inside a container decreases, the volume will:

Decrease

As the pressure outside a container increases, the volume will:

Decrease

As the pressure outside a container decreases, the volume will:

Increase

What is effusion?

Escape of gas through an opening

What is diffusion?

Movement of gas over an area. (Think diffuser)

Which gases will diffuse faster?

Lighter gases diffuse faster.

What are the seven diatonic gases?

Hydrogen Gas (H)

Oxygen Gas (O)

Nitrogen Gas (N)

Chlorine Gas (Cl)

Bromine Gas (Br)

Iodine Gas (I)

Fluorine Gas (F)

What are the six properties of gases?

Low density

Ability to flow

Ability to expand to fill a container

Because there is space in between the particles, gases can contract. (No fixed volume)

Effusion- escape of a gas through small opening

Diffusion- movement of gas across a space.

What instrument measures air pressure?

Barometer

What is absolute zero?

0 Kelvin or -273 Celsius

Why do gases have low densities?

Because their molecules are very far apart.

At STP, one mole always occupies what volume?

22\.4 L

What is an ideal gas?

A gas that assumes perfectly elastic collisions and no attraction between particles.

What are the 4 main units of pressure in chemistry?

kPa

Atm

mmHg

torr

Who’s Law is the total pressure is the sum of the partial pressures in a container?

Dalton’s Law

Where is air pressure least, at sea level or in the clouds?

The clouds. (Less pressure pushing down.)

Where is air pressure highest, at sea level or in the clouds?

Sea level. (More pressure pushing down.)

What are the metric units of temperature in chemistry?

Celsius and Kelvin, but always use Kelvin in formulas.

What is the ability to flow?

Fluidity

What is the ability to expand?

Expansion

What is the ability to shrink the volume?

Compression