Honors chem kinetic molecular theory w/out 2.1

2.2-

An Alchohal level in a thermometer rises when placed in warm liquid:

  1. water heats up glass

  2. glass heats up thermometer

  3. thermometer heats up alcohol

how the Celsius scale evolved: Celsius boiling is 100 degrees and freezing is a weird -273 degrees so Kelvin made freezing at zero degrees Kelvin that way the numbers make more sense.

How to calculate using a manometer:

  1. find difference between two numbers

  2. is Proom or Pbulb Pushing harder?

  3. Proom- Difference= Atmospheric pressure in the room

Barometer works:

  1. Atmospheric pressure pushes a plate of mercury

  2. The Mercury gets pushed into a tube

  3. Higher the pressure gets the higher the Mercury is in the tube

Pressure indicated on a particle level is measured by collisions.

Pressures at sea level:

1 atm

769 mmHG

14.7 psi

101.3 kpa '.

Dimensional Analysis

2.3-

As temperature increases volume increases

As temperature increases pressure increases

As volume increases pressure decreases

As # of particles increase pressure increases

Pressure-Kelvin from zero up

Pressure-Celsius from a different number up

vocabulary:

Diffusion

: Particles spreading out from a crowded area to a less crowded area.
Pressure: Force from something pushing on a surface.
Manometer: A tool that measures the pressure of a gas inside a container.
Barometer: A tool that measures the pressure of the atmosphere.
Temperature: A measure of how hot or cold something is.
Thermal Expansion: When an object gets bigger as it gets hotter.
Absolute Temperature: Temperature measured starting from absolute zero.
Absolute Zero: The coldest possible temperature, where all atoms stop moving.
Standard Temperature and Pressure (STP): A fixed set of temperature and pressure conditions used to compare gases.
Kinetic Molecular Theory: The idea that gas particles are constantly moving and colliding with each other.