CHEMICAL REACTIONS WEBQUEST

Hello Grizzlies,
Hope all continues well and your enjoyed your time off last week. This week, you will be learning about types of chemical reactions. I suggest you do this assignment AFTER you do work posted  in CK-12 .
Please, watch the following videos:
https://www.youtube.com/watch?v=aMU1RaRulSo&t=160s       Tyler DeWitt
https://www.youtube.com/watch?v=2qX9MOQOmAM        Tyler DeWitt
https://www.youtube.com/watch?v=TX6BYceUSL0
https://www.youtube.com/watch?v=nsEkKIiOz7Q   COOL EXPERIMENTS DEMONSTRATING  DIFFERENT TYPES OF CHEMICAL REACTION - Do not attempt to do any of these experiments at home.


Name: _______________________________________________ Date: _____/_____/_____
Balancing Equations Webquest
Directions: Go to your teacher's blog.
Click on the following sites under the blogroll.
Answer the questions and balance the equations.
Balancing #1- Chemical Equations and Types of Reactions
http://webpages.charter.net/mcooper/reactions.htm

1. What is a chemical reaction? ____________________________________________________
2. What is a chemical equation? ____________________________________________________
3. What is different about a reversible reaction? ____________________________________________________
4. What are the indicators that a chemical reaction has taken place? ____________________________________________________
5. Look at Examples of Chemical Changes.
   How are the chemical changes different from the listed physical changes?
   

        ____________________________________________________
   

6. Look at Chemical equations of chemical reaction. What does (aq) mean?
   

        ____________________________________________________
   

7. Look at Balancing Equations.
   What is the only thing that can be added to a chemical equation in order to balance it?
   

        ____________________________________________________
   

8. Write the balanced equation for nitrogen and hydrogen gas forming ammonia.
   ____________________________________________________ Why is there a 2 placed in front of ammonia? ____________________________________________________

Period: ______

9. skip 9, 10, and 11

12. Look at Synthesis Reactions.
    How can a synthesis reaction be recognized?
    

         ____________________________________________________
    

13. Look at Decomposition Reactions. How can this reaction be recognized?
    

         ____________________________________________________
    

14. Look at Displacement Reactions. How can this reaction be recognized?
    

         ____________________________________________________
    

15. Look at Double Replacement Reactions. How can this reaction be recognized?
    

         ____________________________________________________
    

Balancing #2- Classic ChemBalancer
http://funbasedlearning.com/chemistry/chemBalancer/ques1.htm

• Click the button for "Directions" and READ CAREFULLY.
• Click the "OK" button and return to the game screen.
• Click "Start Game" button to give it a try.
• Start by adding a "1" in each box and compare the number of atoms of each element you have on each side.
• Change coefficients to balance each equation and click the "Balanced" button to check it. Correct it if it's wrong.
• Use the information in the pop-windows to answer each question and the write the balanced equation before clicking the OK button.

1. Reaction 1a. Balanced Chemical Reaction:
b. What does "Ferrum" mean? ___________________________ c. What color is sulfur? ___________________________

2. Reaction 2a. Balanced Chemical Reaction:
   b. What is HCl? ___________________________
   c. Where is it found in your body? ________________________
3. Reaction 3a. Balanced Chemical Reaction:
   b. What are Pyrotechnics? ______________________________
4. Reaction 4a. Balanced Chemical Reaction:
   b. What was the Hindenburg? ___________________________
   c. What gas was used in it? ___________________________
   d. What gas is used today? ___________________________
5. Reaction 5a. Balanced Chemical Reaction:
   
   2. What does the symbol "Hg" represent? __________________
   3. Why should you never touch it?
      

           __________________________________________________
      

6. Reaction 6
   a. Balanced Chemical Reaction:
   b. What gas is produced when calcium metal is dropped in water? __________________________________________________

7. Reaction 7a. Balanced Chemical Reaction:
   b. What is CH4? ___________________________________
   c. What gases is it related to? ___________________________
8. Reaction 8a. Balanced Chemical Reaction:
   b. What is H2O2? ___________________________________
   c. What is it used for? __________________________________
9. Reaction 9
   
   1. Balanced Chemical Reaction:
   2. What two things is ammonia used for today? __________________________________________________
10. Reaction 10
    
    1. Balanced Chemical Reaction:
    2. How is the oxidation of aluminum different from that of iron? __________________________________________________
11. Reaction 11
    
    1. Balanced Chemical Reaction:
    2. What gas is released when potassium permanganate is decomposed? ___________________________________

INTRO TO STOICHIOMETRY: BALANCING CHEMICAL EQUATIONS

INTRO TO STOICHIOMETRY: BALANCING CHEMICAL EQUATIONS

    Hi Grizzly Students!

Thank you for visiting my blog! Your presence here shows dedication and a desire to continue your education as an independent learner which also places you closer to becoming a successful college student. 

I hope you, your family and friends are safe, healthy and counting the days to get back to our normal daily routines.

    We started our Introduction to Stoichiometry by learning how to calculate the molar mass of molecular compounds (covalent bonding) and formula units (ionic bonding). 

This blog will continue to guide you towards our Stoichiometry unit. Bottom line is that in order to do Stoichiometric calculations (yup, there will be Math!)  you need to have a very good understanding of what a chemical equation is AND how to balance it properly. 

   I am hoping that between my blog and the CK-12 online learning site, you can get enough help to be able to understand the subject at hand. 

    I can see which student is actually doing these enrichment assignments.  It does not count against you if you do not do them but you will not be advancing in your knowledge which will help you later on.

   I miss you very much! All of you!  These days have reinforced how much I like being a classroom teacher and how much I miss teaching my students: YOU 

    Feel free to send me a “Hi” email. I would love to hear from you 

Let’s start!

WHAT IS A CHEMICAL EQUATION?

SUMMARY:

    To me, a chemical reaction is a process and a chemical equationis the recipe that explains that process. In class, you’ve heard me comparing chemical equations to an apple pie recipe (or you can choose your favorite recipe).  You have your ingredients (reactants)and your apple pie (products)and in order to actually convert your ingredients into your delicious apple pie you must place them in a pan inside of a heated oven (this is represented by the “arrow”indicating the reactants are “yielding”the products via a chemical process). In other words, reactants chemically combine by breaking chemical bondsand produce (yield) the products by reforming new chemical bonds. Easy, right?

    Chemical reactions take place when bonds are broken, atoms rearrange themselves to form new compounds(two or more different atoms chemically bonded) or molecules(ie: diatomic molecules) and new bonds are formed. All of this work requires energy (another concept for later).
The Law of Consservation of Mass (or Matter) states that during a chemical reaction (or process) the total mass (or matter) remains constant. Basically, the type and number of atoms in the reactant side of a chemical equation must be equal to the type and number of atoms in the product side. Matter is not destroyed during the chemical process but rearranged to form a different type of matter (the products). When you get your apple pie out of the oven, the same amount of ingredients you mixed in the bowl are present in the pie. Nothing got lost. 

    It is because of this Law of Conservation of Mass that chemical equations need to be balanced to show that there is the same type and numbers of atoms in the reactant and the product side of the equation. The way to balance equations is by changing the coefficientin front of the compounds or molecules. 

   Please, read the notes from my blogs and the notes from CK-12 to learn how to properly balance chemical equations. The videos are very useful as well. Tyler DeWitt videos are pretty good.

NOTES:

 https://www.slideshare.net/e045911/notes-chemical-equations

https://preparatorychemistry.com/Bishop_Book_4_eBook.pdf Read and answer the questions all the way down to 4.2 Solubility of Ionic Compounds and Precipitation Reactions  (do not do this part)

https://www.wikihow.com/Balance-Chemical-Equations

https://www.pdx.edu/tutoring/sites/www.pdx.edu.tutoring/files/Chemistry%20221%20Balancing%20Chemical%20Equations.pdf

PRACTICE:

https://sciencespot.net/Media/blncact.pdf

https://www.svsd.net/cms/lib5/PA01001234/Centricity/Domain/745/B9%20Balancinc%20Equations%20Intro%20STU%20and%20Key.pdf

https://www.thoughtco.com/balance-equations-printable-worksheets-604024   It also contains practice online quizzes

https://www.gpb.org/files/pdfs/gpbclassroom/chemistry/balancingEquationsWkst.pdf

https://www.northallegheny.org/cms/lib/PA01001119/Centricity/Domain/1083/balancingpractice.pdfWith answers included

VIDEOS:

https://www.slideshare.net/e045911/notes-chemical-equations

https://www.youtube.com/watch?v=yA3TZJ2em6g&t=116sTyler DeWitt

https://www.youtube.com/watch?v=eNsVaUCzvLATyler DeWitt

https://www.youtube.com/watch?v=yA3TZJ2em6g&t=116sHow to balance equations 

https://www.youtube.com/watch?v=_B735turDoM&t=21sBozeman

---

 [MOU1]

Just checking in to say "I am thinking about you"

CELEBRATE EARTH DAY

Hi Gundy Chemistry Students!

I received this information about Earth Climate on an email and I thought to share it with my Chemistry students. 

Why? How is this issue related to you? 

Well, you live in this beautiful Planet, you breath the air, you wonder about many of the marvelous life forms this Planet supports and, yes, directly or indirectly, we all participate in polluting it in many ways.  

Feel free to join the websites and learn more about this serious issue and how we can help to improve it and save our Planet.

"Earth Day Live 2020 is less than a month away.

From April 22 to 24, young people and adults will come together for a three-day live stream event focused on climate action. 

Earth Day Live is a 72-hour live stream and online mobilization that aims to engage people across the country and the world in collective action to protect their climate and communities. The live stream will include training sessions, performances, and appearances to keep people engaged, informed, and inspired, with speakers including celebrities, politicians, scientists, and youth activists."

Learn more about Earth Day Live at earthdaylive2020.org  

Here are other helpful links to learn about climate change action:

Strike With US Coalition - https://strikewithus.org/
Earth Day Action Hub - https://www.earthday.org/take-action-now/  
Green New Deal - https://www.sunrisemovement.org/green-new-deal  

  

INTRO TO STOICHIOMETRY: THE MOLE AND MOLAR MASS

WORKING OUR WAY TO STOICHIOMETRY…

Hello Students!

In our approach to continue your academic progress, I am providing you with information about the topics we were going to cover in class this semester. I highly suggest you read the notes and watch the videos I am including in my blog. 

Please, practice the problems presented in the videos and notes to check your understanding on the subjects presented to you. You have my email address and can always check with me through it. 

These assignments are an introduction to STOICHIOMETRY. However, we will also need to cover “Balancing Equations” before getting in full into STOICHIOMETRY.

For now, you will need a good understanding of what a “MOLE” is and how to calculate “MOLAR MASS.”

THE MOLE CONCEPT

NOTES:

Moles 

http://www.occc.edu/kmbailey/Chem1115Tutorials/Stoichiometry_Molar_Mass.htm

The mole is the "counting unit" used by chemists to indicate the number of atoms, ions, molecules, or formula units present in a particular chemical sample. The mole is similar to other counting units that you've used before....pair (2), dozen (12), and gross (144). One mole of a compound contains Avogadro's number (6.022 x 10²³) of molecules (molecular compound) or formula units (ionic compound). 

Chemists defined a mole as the amount of atoms that are in exactly 12 grams of carbon-12, which is Avogadro’s number!

https://www.acs.org/content/acs/en/education/outreach/moles.html

CONCEPTS: 

^·              One mole represents Avogrado’s number of atoms, ions, molecules (covalent bond) or formula units (ionic bond). This is a huge number: 6.022 x 10²³

^·             One mole equals the amount of atoms in 12 grams of Carbon-12

^o     If you weight 12 grams of Carbon-12 it will contain ONE MOLE which means that it will also contain 6.022 x 10²³ atoms because ONE MOLE has 6.022 x 10²³atoms 

^o     12 g C-12 = 1 mole = 6.022 x 10²³ atoms                 

1 mole of Fe contains 6.022 x 10²³ atoms       1 mole of Li contains 6.022 x 10²³atoms       

1 mole of Ca contains 6.022 x 10²³ atoms       1 mole of Al contains 6.022 x 10²³atoms       

https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Supplemental_Modules_(Physical_and_Theoretical_Chemistry)/Atomic_Theory/The_Mole_and_Avogadro%27s_Constant

Read until you get to EXAMPLE 1: CONVERTING MASS TO MOLES We’ll get to that later)

MOLES VIDEOS:

Tyler DeWitt is a favorite of mine and so is Boozeman. Feel free to Youtube for any videos regarding the concept of Moles. These are just suggestions I think will help you to better understand this very important chemical concept.

https://whttps://www.youtube.com/watch?v=qmCAnw7D17g ww.youtube.com/watch?v=TEl4jeETVmgHow big is a mole? J

https://www.youtube.com/watch?v=3Cq1Std7Mb8

https://www.youtube.com/watch?v=2P--fRgdSF0  Tyler DeWitt J

https://www.youtube.com/watch?v=Pft2CASl0M0&t=3s  Boozeman J

HOW TO CALCULATE MOLAR MASS

NOTES:

http://www.occc.edu/kmbailey/Chem1115Tutorials/Stoichiometry_Molar_Mass.htm

http://pnhs.psd202.org/documents/jpstrzoc/1576273657.pdf

https://study.com/academy/lesson/what-is-molar-mass-definition-formula-examples.html#transcriptHeader

Formula Weight (FW) 

Use to calculate the molar massof ionic compounds (ionic bond). The molar mass is based on the atomic weight of each atom (this is the numerical equivalent to the atomic mass  unit or “amu” you find in the periodic table). 

The units you will use are grams/moles or moles/grams instead of “amu.” You must use the periodic table in order to calculate molar masses since you need to find the “amu” of each atom and change the units from “amu” to grams/mole. 

Sum of the atomic weights for the atoms in a chemical formula 

·      The formula weight of calcium chloride, CaCl2, would be 

Ca:1(40.08 g) + Cl: 2(35.45 g)  The formula unit has ONE atom of Ca and TWO atoms Cl. Notice I am using the units of grams instead of “amu.”

 Don’t forget  to multiply the  amu  by the subscript  which tells you how many atoms of each kind you have. Again, in this formula, chlorine has TWO atoms and you must multiple the “amu” you find in the periodic table by 2 in order to get the correct mass for Cl2

Adding the masses of Ca and Cl2      you get 110.98 grams/ mole of  CaCl2

This means that there are 110.98 grams in ONE mole of CaCl2   

Molecular Weight (MW) Use to calculate the molar massof molecules (covalent bond)

• Sum of the atomic weights of the atoms in a molecule. The process to calculate the molar mass of MW is the same as for FW as explained above

• For the molecule ethane, C2H6, the molecular weight would be 

C: 2(12.01 g) + H: 6(1.008 g) 

Molar mass of ethane is 30.07 g/mole. One mole of ethane contains 30.07 grams

PRACTICE:

https://www.thoughtco.com/molar-mass-test-questions-604123

http://www.occc.edu/kmbailey/Chem1115Tutorials/Stoichiometry_Molar_Mass.htm

http://orbitsimulator.com/mercy/Molar%20Mass%20Practice%20Worksheet%20solutions.htmWITH ANSWERS

http://misterguch.brinkster.net/PRA001.pdfWITH ANSWERS AT THE BOTTOM

https://www.everettcc.edu/files/programs/academic-resources/transitional-studies/support/tutoring-center/chemistry/w339-molar-mass-worksheet.pdf WITH ANSWERS AT THE BOTTOM

VIDEOS:

Tyler DeWitt is a favorite of mine and so is Boozeman. Feel free to Youtube for any videos regarding the concept of Molar Mass. These are just suggestions I think will help you to better understand this very important chemical concept.

https://www.youtube.com/watch?v=o3MMBO8WxjY

https://www.youtube.com/watch?v=c_zHROisdP4

https://www.youtube.com/watch?v=BO9M1hbs88s&t=134sTyler DeWitt

https://www.youtube.com/watch?v=Qflq48Foh2w&t=83sTyler DeWitt