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Q4: Week 4  – 5/16 – 5/20

                                                                                                                                                                                       Jump toTuesday,   Wednesday,  Thursday,  Friday                                                                                                          ______________________________________________________________

5/16 – Monday – A Day – 2/3a Lab, 4

Main focus –                                                                                                                                                         
                                                  

    a) To begin our Regents Chemistry Preparation – (Final)

     b) To review the basic concepts of thermal equations.

Period 2/3 , 4: 

1. We will review the concepts of the heating and cooling curve.

 Classwork:

Heating and Cooling Curve Review worksheet.pdf

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Heating and Cooling Curve Review worksheet KEY.pdf
View Download

 

 2. Complete a Regents Lab on a cooling curve. 

LAB 5 honors -Cooling curves of an unknown substance
View Download 

Time Lapse of a heating curve- 

 

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5/16 – Monday Homework: –                                                                                                                                                                  

Take out the garbage. Take in the garbage. Fold clothes..

                                             

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5/17 – Tuesday – B Day – 2, 3b/4 Lab

Main focus –                                                                                                                                                         
                                                  

    a) To review the concepts of the heating and cooling curve

    b) To perform an unknown cooling curve lab.

     c) To calculate joules using all thermal equations

 Period 2 : 

1. complete selected questions from the Heating and Cooling Curve Review worksheet.pdf.

2.  Calculate joules using all thermal equations.

Classwork:

HV&HF problems honors .pdf

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HV&HF problems honors KEY .pdf
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1. Start the Lab.
2.  Complete the review of the heating and cooling curve.   
3. Complete selected questions from  Heating and Cooling Curve Review worksheet.pdf.
4. Calculate joules using all thermal equations                                        

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5/17 – Tuesday Homework: –                                                                                                                                                               

 
Ha!                                                                                                                                                        

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5/18 – Wednesday – A Day – 2/3a Lab, 4

Main focus –                                                                                                                                                         
                                                  

    a) To review chemical reactions identification, and balancing.

    b) To balance double replacement reactions (without writing Net Ions).

    c) To determine if a precipitate occurs during a double replacement reaction.

Period 2/3 , 4   

 1. Chemical Reaction Identification, prediction of products, and chemical balancing.

      – Table E and F

Balancing Chemical Reaction Concoction 2015.pdf                                                                                                          View Download

Balancing Chemical Reaction Concoction 2015 Key.pdf                                                                                                                    View Download

 2.  Determining if a double replacement will result in a precipitate.

 3.  Double replacement lab –  period 2/3 only

Double Replacement Lab.pdf
View Download

2  

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5/18 – Wednesday Homework: – 

   
1.   No sleep tonight!!!

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5/19 – Thursday – B Day – 2, 3b/4 Lab

Main focus –                                                                                                                                                         
                                                  

    a) To review the concepts of  regents solubility using tables F and G.

Period 2:

1. To review basic concepts of solubility:

Homogeneous mixtures, aq, solvent, solute, factors that affect solubility for a solid and a gas,                                                               saturated, unsaturated and super saturated solutions, dilute and concentrated.

Table G questions and Table F questions – 

percent by mass – solubility 

ppm – part per million

Classwork:

Table G WK07.pdf

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Table G 2 WK07 Key.pdf
View Download

Period 3/4: 

 1. Double Replacement Lab

 2. To review basic concepts of solubility (posted above).

 

Table G – solubility curves-  If you had trouble with Table G today!

 

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5/19 – Homework: – 

 

 Sleep in….. your bed..

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5/20 – Friday – A Day – 2/3a Lab, 4

Main focus –                                                                                                                                                         
                                                  

    a) To Review the concepts of collision theory and factors that affect the rate of an                     reaction.

    

Period 2/3, 4:
 1. effective collisions, factors that affect the rate of a reaction.

 
Rate Factors worksheet 07.pdf

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Rate of Reactions factors Regents worksheet.pdf

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 2.  Organic Chemistry begins – up to slide 21 in the organic presentation below.

 

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TODAY’s NOTES:

An effective collision is a physical collision between reacting elements, compounds, or ions that results in the breaking of old bonds and the formation of new ones. 
 
An effective collision requires 2 conditions:
 
                                1.  High enough kinetic energy to overcome the repulsive forces of the 
                                     cloud of electrons all chemical species have on their outside.
                                    – if the reactants are not free atoms then some energy is needed to be consumed to
                                       break the bonds.
 
                                2.  Correct orientation of the reacting chemicals.  Larger molecules especially
                                      have areas where chemical reactions can and cannot occur.  Thus the 
                                      collisions of the reacting particles can occur at certain positions allowed
                                      by the second law of thermodynamic.
 
           Kinetic Energy factor:
            Orientation Factor:

 


 

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When Effective collision are increased then the rate at which the chemical reactions occur also increases.  
Now in general or statistically, if we increase the frequency of collisions, we will increase the number of effective collisions.  The factors that will increase the frequency of collisions include:
 
    1.  Temperature – particle motion (velocity) is proportional to temperature:
                    
                                                           Average Speed (velocity)    =    urms = √3RT/M
 
                                The faster reactants move the higher the frequency of collisions.
 
 
    2.  Pressure – If a reactant is a gas then increasing its partial pressure or decreasing its volume of the                                   reactant container will increase the frequency of the collisions.
 
 
    3. Catalyst –  Catalysts will provide a new reaction mechanism that will have a Net lower Ea (activation  
                               energy)  or will help with the orientation like biological enzymes or metal catalysts. 
                               Catalysts lowers the energy requirement to start reactions and thus makes the frequency                                                                     of  effective collisions increases with increasing the the overall frequency of collisions.                                                                           It increases the percentage of effectiveness of total collisions.
 
Elephants toothpaste demo: https://youtu.be/8ZnNSTzl1lc
 
    4.  Surface area –  powdered forms of reactants will increase the frequency of collisions more than                                                           reactants  
                                  in solid lumps because more reactants are exposed to collisions.
 
Elevator Explosion demohttps://youtu.be/u3CixGBlBN0
dragons breath demo: https://youtu.be/WLcEFWTXWpk
    
    5.   Concentrations   The amount of available reacting particle. will affect the frequency of                                                                              collisions. 
 
    6. Nature of Reactants – Ionic compounds react faster than covalent compounds.
                                              

Organic Chemistry 1:

Concentration Factor for rates of reaction- 

 

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5/20 – Tuesday Homework: –                                                                                                                                                               

 
Catch some rays..in the visible spectrum only!