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Chemistry

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paul peddy

on 26 March 2015

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Transcript of Chemistry

Chemistry
Three States of Matter
Phases
Liquids-Gases: When liquid molecules gain heat, they
evatporate
into gases.
Gases-Solids:
Deposition
is when a gas turns to a solid without going through the liquid state of matter.
Solids-Liquids: The
melting point
is when the temperature in which a solid would melt into a liquid.
Liquids-Solid:
Freezing
is when liquids turn into soldis from being in the cold.
Solids-Gases:
Sublimination
is the proccess in which solids turn to gases.
Gases-Liquids:
Condensation
is whe gases turn into liquids from the gases losing enough energy and cool down to transform back into liquids.
Kinetic Molecular Thoery (KmT)
The Kinetic Molecular Theory (KmT) is based on the movement of molecules and how they move.
Gases: The KmT describes a gas as a large number of small molecules tre in constant and a random motion.
They move in a straight line until they collide with another or the walls of what contains them.
Much smaller than thedistance between particles. Most of the volume of a gas is therefore empty space.
Copounds
CO2: Carbon Dioxide
CO2 Crystal System
Carbon Dioxide is apart of the Cubic Crystal System.
Liquids: Atoms or molecules move freely and is always in constant motion, taking up space.
Solids: Tightly packed molecules. Solids are in a fixed shape and don't move freely like liquids and gases.
Gases: Airlike fluid that expands freely and fills any space.
Melting Point= -108.4°F (-78°C)
Boiling Point= -70.6°F (-57°C)
Freezing Point= -56C
Molar Mass= 44.01 g/mol
Effusion Rate= 0.62675
Diffusion Rate= 3.14357142857
Formula for
CO2: a=b=c
a=B=y=90 degrees
References:
By: Paul Peddy
http://en.wikipedia.org/wiki/Dry_ice
http://webcache.googleusercontent.com/search?q=cache:HDwWoEOLXtwJ:https://answers.yahoo.com/question/index%3Fqid%3D20120215061929AAxMw6P+&cd=1&hl=en&ct=clnk&gl=us
https://books.google.com/books?id=Q4pOxATf7gcC&pg=PA27&lpg=PA27&dq=effusion+rate+of+co2&source=bl&ots=2fX-nXIXVn&sig=kL5cs3HROqfH-NoHqxs_fuXQeTg&hl=en&sa=X&ei=KDoUVYbBF8ufyATOgYHwCQ&ved=0CDAQ6AEwAg#v=onepage&q=effusion%20rate%20of%20co2&f=false
Ms. Hammons notes
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