Continuing with chemical reaction types from yesterday (ayer in Spanish) I have a couple of Double Replacement Reactions for you. I’d like you to predict the products of

A. Potassium Cyanide (KCN) being added to Hydrogen Bromide (HBr) –>

B. Aluminum Nitrate ( Al(NO₃)₃) added to sulfuric acid (H₂SO₄) –>

Note: The cyanide polyatomic ion CN^– has a single negative charge.

Note 2: The nitrate ion NO₃^– also has a single negative charge.

Note 3: The sulfate ion SO₄^2- has a 2- charge. What is the charge for Aluminum from Group 13?

Please write both chemical equations with neutral compounds and then balance the equation with coefficients. Take a picture or two of your final answers and attach it (them) to your Remind post. Remember: there can be no charges in the final compounds (they cancel out) and no superscripts. The first one is easy, the second is challenging. Good luck.

Stay healthy and Stay Breezy.

T. Brown

Happy Thursday, everybody. I hope today finds you happy and healthy. Not an easy task.

Today’s chemistry question goes all the way back to 9.2 in our chemistry textbook. Remind me to resend Ch. 9 notes in Remind.

There are five types of chemical reactions. Name the type of reaction for the following:

1. 2Na + Cl₂–> 2NaCl (I copy and pasted from a Google doc to get the subscript.)
2. CH₄ + 2O₂ —> CO₂ + 2H₂O
3. NH₄NO₃ —>  N₂O + 2H₂O

How can you tell which type of reaction they are?

Thank you,

Stay healthy and Stay Breezy

T. Brown

Dear Students of Chemistry:

Thank you (most of you) for your timely responses to my e-mail. Future contact from me will be via this Blog or Remind. So, stay tuned.

The last question: When you combine oxygen and sodium they form an ionic compound. What is the formula and name of this compound?

The answer: Na2O is called sodium oxide. The “2” should be subscripted, but I cannot do that on this blog…yet.

Our new question: Sodium oxide is an ionic compound because it transfers electrons to make two oppositely charged ions that that are pulled together electrostatically. However, some elements combine by sharing electrons. We call these covalent compounds “molecules”.

New question to answer via Remind: What is the name and formula of the compound that contains one carbon and four chlorine atoms?

If you haven’t had the chance to reply to yesterday’s e-mail you should do so today. If I don’t hear from you by 11 p.m. I must turn your name in to Dr. Kanso and the principal. It’s just to make sure we are connected and learning a little bit in these difficult times.

Stay healthy and Stay Breezy.

T. Brown

Good morning and welcome to chemistry. We know this situation with the corona virus is serious, dangerous and unpredictable. Please be patient with me, the administration and with each other as we try to make the best of a difficult situation.

Your first assignment is quite short, a one-question “quiz” just to see if we are in contact with each other. If you do not turn in the assignment by 11:00 p.m. on Tuesday (tomorrow), I will turn your name in to Mr. Martin. He has made this a requirement.

For 5 summative points: When oxygen and sodium combine in an ionic compound, what will be the formula and name of the compound?

Remember to make a neutral compound and to put the metal ion (the positive cation) first in the compound.

You can e-mail your answer to brownt@dearbornschools.org.

Also, you can join the “Remind” by texting @brownd5 to 81010.

Also, check out the iLearn for the notes and worksheets in progress. I will send the notes for chapters 8-10 in Remind when most folks have responded. I’m not sure if you’ll need access to the notes in Google Slides. Let me know.

Good luck, and stay safe and healthy.

T. Brown

Teacher of the Decade

@brownd5

Thank you.

We have jumped into Chapter 9 with both tongs!  There are five types of chemical reactions that you should recognize.  You should also be able to balance chemical equations.  The YouTube videos and Socrative.com formative assessment should prepare you for next week’s test.

We will also work on predicting products for single replacement reactions.

You should study the study guide.  Good Luck!

TBB

We tried to Vlog.  But, there was a security issue.

https://docs.google.com/document/d/1sJtDOdw-RUbUzIJd5lLXQ2TZzr8O4JSVlUN2UP5AXoc/edit?usp=sharing

https://docs.google.com/document/d/1sJtDOdw-RUbUzIJd5lLXQ2TZzr8O4JSVlUN2UP5AXoc/edit?usp=sharing