Showing posts with label Gas Laws. Show all posts
Showing posts with label Gas Laws. Show all posts

Sunday, May 8, 2016

Quiz Prep

Before the quiz on Friday, I found many websites for practice to differentiate between the three laws and to be more familiar with the concepts of gases. Here are some links I used to prepare for my quiz:
http://ed.ted.com/lessons/1207-1-a-bennet-brianh264

http://www.sparknotes.com/chemistry/gases/ideal/section2.rhtml

http://www.proprofs.com/quiz-school/story.php?title=gas-laws-review-quiz-20-items

http://www.sciencegeek.net/Chemistry/taters/Unit7GasLaws.htm

http://antranik.org/wp-content/uploads/2011/11/charles-boyle-avogadro-law-combined-gas-law.jpg

Avagadro's Law

The last lesson we had before the quiz was introducing us to Avogadro's Law. This law states that for a gas at constant temperature and pressure, the volume is directly proportional to the number of moles present, which means that the formula looks like this:
http://thescienceclassroom.org/wp-content/uploads/2013/04/Avogadros-Law.png
We had to also use our mole road map for the volume and mass of what we were dealing wit. One important number for STP we had to memorize was 22.4L.
Here is how it would look:
https://elearning.kctcs.edu/bbcswebdav/users/kmuller0001/SoftChalk%20Files/CHE%20120%20Chapter%205/Vn.jpg
Also, the graph would remain linear:
https://s3.amazonaws.com/classconnection/186/flashcards/5446186/gif/graph-avogadro-1514FE9BE407D213356.gif
Practice for this law:
http://www.chemteam.info/GasLaw/Gas-Avogadro.html
http://dvhsgaslaws.weebly.com/avogadros-law.html

Charle's Law

The second day in lessons, we added to our gas laws and learned Charle's Law. This states that temperature and volume vary directly with each other, using the same formula, and this is at constant pressure. It is important to remember that this also must be done in Kelvin, so to convert from celsius to Kelvin, you have to add 273.15 to the original C.
This is what the formula is directly for this, and what it would look like:
https://upload.wikimedia.org/math/9/6/8/9682f75ffd644c1e723156ad5919c8a6.png

http://wps.prenhall.com/wps/media/objects/4678/4790892/images/aabjvhoa.jpg
The graph of this relationship would also look like this:
http://chemwiki.ucdavis.edu/@api/deki/files/8688/=CharlesLaw_(2).jpg?revision=1
Here are more links for practice:
http://www.chemteam.info/GasLaw/WS-Charles.html
http://science.widener.edu/svb/tutorial/charleslawcsn7.html

Gas Laws Intro

Our first lesson in this unit introduced us into the characteristics of gases and measuring pressures. We learned that ages expand spontaneously to fill their container, have no definite volume, are highly compressible, form homogeneous mixtures, and have molecules that are relatively far apart from one another.
Then, we went into converting into different units of pressure, where we had to memorize a similar chart:
https://i.ytimg.com/vi/mQn1Lat73AE/maxresdefault.jpg

Then, we learned about Boyle's law, which come of the basis of:
http://patentimages.storage.googleapis.com/EP0023910B1/imgb0016.png
This law states that relationship between pressure and volume is an inverse relationship, and holds true at constant temperature and moles. We then did some practice problems and looked at how the law works. 
https://d2gne97vdumgn3.cloudfront.net/api/file/jMkrpsxQ5epbGnRIvowW
Here are some links to help with this lesson and overall gasses: