Download - Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219
![Page 1: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/1.jpg)
Equilibrium: How is your balance?
Physical Science December 12, 2011
Ms Cillipages 216-219
![Page 2: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/2.jpg)
Physical Science pages 216-219
![Page 3: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/3.jpg)
Physical Science pages 216-219
Objectives
Identify and describe physical and chemical equilibria.
Describe the factors affecting chemical equilibrium.
![Page 4: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/4.jpg)
Physical Science pages 216-219
Ever rode a seesaw?
![Page 5: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/5.jpg)
Physical Science pages 216-219
Equilibrium
A state in which the forward and reverse paths of a change take place at the same rate
What are the two types of changes?
1. 2.
![Page 6: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/6.jpg)
REVERSIBLE REACTION
Physical Science pages 216-219
![Page 7: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/7.jpg)
When physical change does not go to completion, a physical equilibrium is established
The forward and reverse changes are the same
Example: slushie
Physical Science pages 216-219
Physical Equilibrium
![Page 8: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/8.jpg)
Physical Science pages 216-219
![Page 9: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/9.jpg)
Physical Science pages 216-219
Chemical Equilibrium
Occurs when the reaction does not go to completion
Example:
![Page 10: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/10.jpg)
All together now…
A physical
equilibrium is
established
between the
forward and reverse
reactions when the
physical change
does not go to
completion
A chemical
equilibrium is
established
between the
forward and reverse
reactions when the
chemical change
does not go to
completionPhysical Science pages 216-219
![Page 11: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/11.jpg)
Physical Science pages 216-219
When a change is introduced into a
system in equilibrium, the
equilibrium shifts in the direction that
relieves the change
Henri Le Châtelier
![Page 12: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/12.jpg)
1.
2.
3.
Physical Science pages 216-219
Factors that affect equilibrium:
![Page 13: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/13.jpg)
If energy is added to one side, the other side will release it
Physical Science pages 216-219
Factors that affect equilibrium: Temperature
![Page 14: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/14.jpg)
If the reaction is endothermic (adding heat), when the reaction is reversed the heat will be ________. (exothermic).
Physical Science pages 216-219
Factors that affect equilibrium: Temperature
![Page 15: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/15.jpg)
What happens when you squeeze a balloon?
Physical Science pages 216-219
Factors that affect equilibrium: Pressure
![Page 16: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/16.jpg)
If you increase the pressure on one side, it will shift direction to ________ the pressure
Physical Science pages 216-219
Factors that affect equilibrium: Pressure
![Page 17: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/17.jpg)
What happens if you increase the amount of ingredients (reactants) when making a cake?
Physical Science pages 216-219
Factors that affect equilibrium:
Concentration
![Page 18: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/18.jpg)
Physical Science pages 216-219
Factors that affect equilibrium:
Concentration
![Page 19: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/19.jpg)
Physical Science pages 216-219
Closure True or false:
In chemical equilibrium, the rate of forward reaction does not equal the rate of the reverse reaction.
The three factors that affect chemical equilibrium are:
A. PressureB. TemperatureC. ConcentrationD. VolumeE. Only A, B, and C
![Page 20: Equilibrium: How is your balance? Physical Science December 12, 2011 Ms Cilli pages 216-219](https://reader036.vdocuments.us/reader036/viewer/2022062515/56649cff5503460f949d0003/html5/thumbnails/20.jpg)
Assignment: Independent Work:
Read section 7.5 in the book Start studying for the test Finish the study guide
Homework: Section 7.5 HW due Tuesday, December
13th by 8PM
Physical Science pages 216-219