Chapters 7/8 Practice Test on Fri 3/20
Chapters 7/8 "I CANs"...
... determine if a chemical reaction has occurred
... differentiate between the types of chemical reactions
... balance a chemical equation
... predict the products of a chemical reaction
... write and interpret chemical equations
... discuss a substance’s solubility
... draw a particle picture representing an aqueous chemical reaction
... write a reaction’s net ionic equation
... determine if a chemical reaction has occurred
... differentiate between the types of chemical reactions
... balance a chemical equation
... predict the products of a chemical reaction
... write and interpret chemical equations
... discuss a substance’s solubility
... draw a particle picture representing an aqueous chemical reaction
... write a reaction’s net ionic equation
Daily Assignments
Tuesday 3/17
Welcome to 3/17! Happy St. Patrick's Day! I'm currently wearing St. Patrick's Day unicorn socks :D
Today's Goal
Your Tasks
Today's Goal
- I Can... write a chemical reaction's net ionic equation.
Your Tasks
- Finish Atoms in an Uproar Part 4. We went over the front in class, so you should just have the back to complete. If you need a blank copy, see below. Once finished, upload a link to the picture/PDF/some kind of file to the Assignment Tracker.
- Practice Net Ionic Equations. Below is a copy of the Player-Coach activity we started last Friday. If you have a sibling/parent around who wants to learn about Net Ionic Equations, great! You can be their coach. Otherwise, you can just work on these individually. I will post the answer key tomorrow.
- Read/Re-Read 8.5. We'll be starting Redox Reactions tomorrow. Make sure you're prepared :)
- Continue Working on Climate Film Project. You should be editing your film. Post to the Assignment Tracker on 3/30.
- Do something for you :) Exercise at home, read a book, watch a great movie, start a new hobby. Keep active during our break!
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WEDNESDAY 3/18
Happy Wednesday! Hope you're having a great day :) I have posted the answer key to the Net Ionic Player-Coach activity under Handouts. I've also posted a couple of videos explaining how to do a few under Examples. If there's a question you would like to see me walk through, email Mrs. Trine and I'd be glad to make it!
Today's Goals
Quick Note: Due to limitations with the website, I can't always make subscripts :( I tried to make the font as small as I could for the compounds with a subscript but you may have to use your imagination a bit!
Your Tasks
1. Warm Up. Consider the reaction between Mg and HCl from the Chemical Reaction Lab. Think about the number of protons and electrons each element has at the beginning and end of the reaction. What would the charge be on each?
Today's Goals
- I Can... differentiate between the different types of chemical reactions
- I Can... predict the products of a chemical reaction
Quick Note: Due to limitations with the website, I can't always make subscripts :( I tried to make the font as small as I could for the compounds with a subscript but you may have to use your imagination a bit!
Your Tasks
1. Warm Up. Consider the reaction between Mg and HCl from the Chemical Reaction Lab. Think about the number of protons and electrons each element has at the beginning and end of the reaction. What would the charge be on each?
Try to figure this out before looking at the explanation!
Warm Up Explanation
- Start with the magnesium as a reactant. Mg (s) is an element, which means it’s neutral. Checking our periodic table, Mg has 12 protons. Since it’s neutral that means it also has 12 electrons. The charge on Mg (s) is 0.
- Now consider H in HCl. If H was all by itself, it would have 1 proton and 1 electron. Its valence shell wouldn’t be full, but it would be neutral. It wants to fill its outer shell, so it bonds with the Cl. Since the Cl is so electronegative and the H is so electropositive, the Cl mostly holds on to the electron. This means the H has essentially lost its electron. This takes care of its valence shell (it now has 0 electrons and no valence shell) and gives H a +1 charge.
- Now for the Cl. The Cl is very similar to the H, but opposite. By itself, it’s neutral with 17 protons and 17 electrons. It needs one more electron to fill its valence shell. By bonding with H, it gains (hogs) that electron and so it now has a charge of -1.
- Let’s consider the products. Look at MgCl2. The Mg has now bonded to the Cl. This is an ionic bond, meaning Mg gave up two of its electrons to reach the full valence shell. Due to this loss of electrons, Mg now has a +2 charge.
- As for the Cl in MgCl2, each Cl atom has accepted one electron from Mg. This results in the Cl becoming an ion with a -1 charge.
- Finally, the H has bonded with itself to become H2 (g). This is its elemental state (HONClBrF) meaning it's neutral. The charge is now 0.
2. Notes on Redox Reactions. Write down key ideas/concepts in your chemistry notebook.
In the above reaction, we saw that many of the elements changed their charge.
When we see this change in charge, we call this a redox reaction. Redox stands for reduction and oxidation and refers to a reaction where there is a transfer of electrons.
In our class, we just want to be able to recognize a redox reaction. In higher levels of chemistry, we study what the charges are, how they came to be, and what the results are. Redox reactions are widely used in batteries, water sanitation processes, cleaning products, and more.
Redox reactions are like a supercategory of reaction types. We’ve learned about the following so far:
Let's think more about double replacement. In these types of reactions, there is a transfer of atoms rather than electrons. Last week, we closely studied double replacement reactions. Think of these reactions from our Atoms in an Uproar Lab:
Just like redox is a supercategory, double replacement can also be considered a supercategory. There are different types of double replacement reactions. One is what we have been studying and these are called precipitate reactions (where a precipitate is formed :O). Another type is acid-base reactions. We won’t go into detail here.
There are other reaction classification systems used in the scientific world. As you’ve now learned, reactions can belong to more than one category at a time. For our class, it may help to consider this graphic:
In the above reaction, we saw that many of the elements changed their charge.
- Mg went from Mg (s) with a 0 charge to MgCl2 with a +2 charge
- H went from HCl with a +1 charge to H2 with a 0 charge
- Cl stayed the same with a -1 charge in both HCl and MgCl2
When we see this change in charge, we call this a redox reaction. Redox stands for reduction and oxidation and refers to a reaction where there is a transfer of electrons.
In our class, we just want to be able to recognize a redox reaction. In higher levels of chemistry, we study what the charges are, how they came to be, and what the results are. Redox reactions are widely used in batteries, water sanitation processes, cleaning products, and more.
Redox reactions are like a supercategory of reaction types. We’ve learned about the following so far:
- Synthesis
- Decomposition
- Combustion
- Single Replacement
- Double Replacement
- Synthesis
- Decomposition
- Combustion
- Single Replacement
Let's think more about double replacement. In these types of reactions, there is a transfer of atoms rather than electrons. Last week, we closely studied double replacement reactions. Think of these reactions from our Atoms in an Uproar Lab:
- AgNO3 + NaCl
- Na2CO3 + CaCl2
- Na3PO4 + CaCl2
- CoCl2 + Na3PO4
- AgNO3 + Na3PO4
Just like redox is a supercategory, double replacement can also be considered a supercategory. There are different types of double replacement reactions. One is what we have been studying and these are called precipitate reactions (where a precipitate is formed :O). Another type is acid-base reactions. We won’t go into detail here.
There are other reaction classification systems used in the scientific world. As you’ve now learned, reactions can belong to more than one category at a time. For our class, it may help to consider this graphic:
Now that you’ve learned all the reaction types that we’ll cover in this class, revisit the cut and sort/study guide activity as well as the data table from our Chemical Reaction Lab. See if you can figure out which ones are redox and how the electrons are moving. Post a picture of your updated data table to the Assignment Tracker.
3. Notes on Reactivity Series. One of our goals for this unit is to be able to predict the products of a reaction. We’ve learned how to do this for double replacement precipitate reactions. We can also probably do this for simple synthesis and decomposition reactions.
Let’s now look at single replacement reactions. When one of these reactions takes place, we can probably figure out what the products will be. However, determining IF the reaction occurs in the first place can be the trickier part.
Consider the reactions DEF in our Chemical Reaction Lab. Did all of these have a reaction? Why or why not?
Now that you understand the reactivity series, practice with the below worksheet. Post answers to questions in the Assignment Tracker. You'll also find the activity series that would be given to you on an exam.
3. Notes on Reactivity Series. One of our goals for this unit is to be able to predict the products of a reaction. We’ve learned how to do this for double replacement precipitate reactions. We can also probably do this for simple synthesis and decomposition reactions.
Let’s now look at single replacement reactions. When one of these reactions takes place, we can probably figure out what the products will be. However, determining IF the reaction occurs in the first place can be the trickier part.
Consider the reactions DEF in our Chemical Reaction Lab. Did all of these have a reaction? Why or why not?
- D: Cu (s) + HCl (aq) → No rxn
- E: Zn (s) + 2HCl (aq) → ZnCl (aq) + H2 (g)
- F: Mg (s) + 2HCl (aq) → MgCl (aq) + H2 (g)
Now that you understand the reactivity series, practice with the below worksheet. Post answers to questions in the Assignment Tracker. You'll also find the activity series that would be given to you on an exam.
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THursday 3/19
Hello!! Today you are going to take a practice lab practical. Normally, you would have been in the lab and performing the reactions yourselves, but with the current circumstances, I went ahead and did the lab for you. I’ll show you a picture of the results and your job will be to analyze it. This assignment will take some time, so feel free to stretch it out over the weekend. I’d recommend having it finished by Sunday night though since we’ll be starting a new unit on Monday 3/23.
There are three parts to this lab practical:
Your Tasks
For each Part, you need to create a copy of the Google Doc I shared with you. Once you've made a copy, you should be able to type in all your answers (it doesn’t have to be pretty, but I do have to be able to read it). When you’ve finished answering all questions and are ready to turn it in, make sure your first and last names are somewhere on the document. You can type it in the line for "Name" or just add it to the title of your Google Doc. Then click "Share" and look where it has “Anyone with the link can…”. Switch this to “comment” and then copy the link. Post the link to the Assignment Tracker. Do this for all three parts.
Part A Special Instructions: Read through the procedure so you understand how I got my results. Answering these pre-lab questions will be a great help to you when analyzing the results.
Part B Special Instructions: A picture of my results is included in the doc. Look over and copy observational notes into the data table. A few notes:
Part C Special Instructions: You should be able to answer all questions, though editing the student drawing might be tricky. You can try using Google’s editing options (inserting shapes/drawings) or you can draw a hard copy of what you’d do and upload a picture of it into your Google Doc. The important thing is for you to show me what changes you would make, not only tell me in words.
One final note - periodic tables and solubility charts can easily be Googled :) I do have a solubility chart posted here though under Handouts.
Good luck and email me/Mrs.Trine with any questions! (Please let me know if the links aren't working!)
There are three parts to this lab practical:
- Part A: This is the pre-lab. It goes over the procedure and asks you some prompting questions to help you understand the results.
- Part B: This is where you would have recorded your results. The picture of my results is included at the bottom.
- Part C: This is the post-lab. It has a table for you to put your final answers/explanations. It also includes some follow up questions.
Your Tasks
For each Part, you need to create a copy of the Google Doc I shared with you. Once you've made a copy, you should be able to type in all your answers (it doesn’t have to be pretty, but I do have to be able to read it). When you’ve finished answering all questions and are ready to turn it in, make sure your first and last names are somewhere on the document. You can type it in the line for "Name" or just add it to the title of your Google Doc. Then click "Share" and look where it has “Anyone with the link can…”. Switch this to “comment” and then copy the link. Post the link to the Assignment Tracker. Do this for all three parts.
Part A Special Instructions: Read through the procedure so you understand how I got my results. Answering these pre-lab questions will be a great help to you when analyzing the results.
Part B Special Instructions: A picture of my results is included in the doc. Look over and copy observational notes into the data table. A few notes:
- Reaction B and F: it bubbled and fizzed
- AgSO4 is sometimes listed as slightly soluble. For our concentrations, no precipitate would form.
Part C Special Instructions: You should be able to answer all questions, though editing the student drawing might be tricky. You can try using Google’s editing options (inserting shapes/drawings) or you can draw a hard copy of what you’d do and upload a picture of it into your Google Doc. The important thing is for you to show me what changes you would make, not only tell me in words.
One final note - periodic tables and solubility charts can easily be Googled :) I do have a solubility chart posted here though under Handouts.
Good luck and email me/Mrs.Trine with any questions! (Please let me know if the links aren't working!)
Friday 3/20
Happy Friday!! Hope you had a great week :) We are going to take a practice exam today. We’ll be taking it through Socrative. Click on this link and it should take you to a student login page. Our room number is FRITZ3988. Once you type this in, you should be able to access the test. I’ll leave the test open until Sunday night. Good luck!!
Unit Calendar
Monday |
Tuesday |
Wednesday |
Thursday |
Friday |
2/25 HW: Read Chapter 7, #'s 1, 2, 33ac Due: Mole Extra Credit |
2/26 HW: #’s 4-8, 20, 34ac |
2/27 HW: Chapter 7 #’s 14, 16, 35ac, Read 8.6 |
2/28 HW: Chapter 7 #’s 33bd, 36 |
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3/2 HW: Read Chapter 8.1 and 8.7, Sort Rxns from Sorting Activity, Predict Reactions for Parts B-G QUIZ: Chapter 7 - Balancing |
3/3 HW: Work on rxns from Sorting Activity (you can balance them or cut and paste them on to the correct sheets), Predict Reactions for Parts H-K, Read Chapter 8.3, #'s 1, 2 |
3/4 HW: Review Data Table, Predict Tomorrow’s Reactions, Finish Balancing Reactions from Sorting Activity, #’s 30, 37-39abc |
3/5 HW: Review Data Table, Finish Sorting Activity |
3/6 HW: climate change film project Due: Lab Data Table, Study Guide Sheets from Sorting Activity |
3/9 HW: Read 8.2, #'s 3, 7 |
3/10 HW: #’s 29ace, 42-43abc |
3/11 HW: Finish filling in Atoms in an Uproar Part 2 - Data Table |
3/12 HW: Finish Atoms in an Uproar Part 3, Read 8.4 and 8.5, #’s 33, 41ace, 42d-g |
3/13 HW: |
3/16 HW: Atoms in an Uproar - Part 4 |
3/17 Daily Assignments to be Posted: - Atoms in an Uproar Part 4 HW: Review 8.5 |
3/18 Daily Assignments to be Posted: - Re-label Chem Reaction Lab reaction types - Single Replacement Prediction Worksheet |
3/19 Daily Assignments to be Posted (Post by 3/22): - Lab Practical Part A - Lab Practical Part B - Lab Practical Part C |
3/20 Daily Assignments to be Posted: - Nothing to post today, but you do have a practice test on Socrative |
PowerPoints
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Handouts
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Check out these worksheets for extra practice!
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practice_-_net_ionic_equations.pdf | |
File Size: | 381 kb |
File Type: |
Examples
Net Ionic Player-Coach Activity Video Explanations
Reminders and Tips
Try this link to help you study your ions - ION BLASTER