Post 4 Gas Laws

We did the airbag lab today that involved mixing baking soda and vinegar (5%) to produce CO2 in a bag. Starting this lab we found the volume of the bag by filling it with water before converting this amount (mL converted to L) into mols using the equation PV=nRT. After getting the mols, we used this number to find the grams of baking soda needed (stoichiometry) and the mL of vinegar needed (mols of vinegar x 20/1.05 [density]). After that, the lab was smooth sailing.

Post 3 Gas Laws

Other important laws include:
Charle's Law which involves temperature (in Kelvin) and Volume. It can be used in the equation V1T2 = V2T1.
*remember, when using temperature in Celsius, convert to Kelvin by adding 273.15
chemteam
 
Avagadro's Law uses volume and moles in a similar equation.
 Chemistry
chemteam

Finally, Combined Gas Law is a combination between Charle's Law and Boyle's Law using temp, pressure, and volume.
chemteam

Post 2 Gas Laws

Know certain laws that using different parts of the equation (P1V1)/T1 = (P2V2)/T2.
Boyle's Law leaves temp and mols constant while volume and pressure change.
nasa
khanacademy
Common units of pressure:

Post 1 Gas Laws

Characteristics of Gases:
- gases expand spontaneously to fill their container
- gases are highly compressible
- gases form homogeneous mixtures
- gas molecules are relatively far apart from one another and exert little influence on each other
chem4kids
purdue
And here's some extra details, just for fun.
mikeblaber
 

Post 2 Energy and Phase Changes

Here's some sources and practices.
youtube
youtube
hyperphysics
hyperphysics
boundless
boundless

 

Post 1 Energy and Phase Changes

Energy and phase changes are physical changes of state where intermolecular bonds are broken (not intramolecular bonds).
To determine this, use the equation q=mc∆t where q= thermal energy in J, c= specific heat capacity, and ∆t= change in temperature.