Showing posts with label Chemical Reactions. Show all posts
Showing posts with label Chemical Reactions. Show all posts

Thursday, December 3, 2015

Web Resources for Chemical Reactions Unit

Here is a list of web resources for this unit. If you need to reference this unit for the final exam, I recommend these resources. Sorry I am posting this after the test, but I was kind of busy with this unit. Hopefully you like these resources.

1. Balancing Chemical Equations - This website shows you how to balance chemical equations and also has a couple good examples which show you what you do if you encounter any irregular equations.
2. Combustion Reactions - This website covers all you need to know about combustion reactions. It also has a video explaining chemical reactions.
3. Precipitation Reactions - This website covers the whole precipitation reaction and also has a condensed form of the solubility rules.
4. Solubility Rules Memorization - This website has two ways to remember the solubility rules.
5. Acid-Base Reactions - This website has an overview on acid base reactions and also has several examples. This website also provides free live chem tutoring so if you need help, you can go ask for help.
6. Redox Reactions - This website further explains redox reactions and also contains 10 examples on how to solve redox reactions. I used this website for help when I had a doubt about something related to redox reactions.

Chemical Reactions Test

My study session started yesterday at about 8 pm. I first, read the notes and read the rules and memorized and understood as much as I could. I did not look at the group chat as they were talking way too much. I took a 1 hour nap and when I woke p, there were 306 messages from groupme. So I decided not to read the chat. After I studied the notes, I took both practice tests. I missed two questions on the first one and missed none on the second. I felt pretty confident. I had a good night's sleep. This was the me yesterday. I woke up in the morning and went to school as usual. At about 3rd hour, I asked my friend about the test. She said it was alright so I relaxed. Then at lunch, my other friend told me that it was the hardest test of his life. I stared at him in disbelief. He was pretty smart too so I got a little worried. But I still didn't review and stayed strong. After I got the test packet, you will not believe the expression on my face. It looked a little like this.

I had no clue where these problems came from. I went through the test and did what I could. Turns out I skipped 7 problems out of 30. I went back and answered to the best of my ability. Most of those 7 are probably wrong. What I would be thankful for was if this test didn't drop my semester grade too much. Well, lets see what happens.

Reactivity Series Lab

This lab was almost exactly the same as the previous lab, which was the the solubility lab. We used the exact same well plates and we were mixing 2 things. The only difference was that we were looking to see if there was a chemical reaction in the reactivity series lab. In this lab however, we were conducting redox reactions. We were not conducting double replacement reactions. The prelab for this quiz was pretty easy. Partner A got a multiple choice and naturally, me being partner B, got the non multiple choice question. Although, I got the easy question this time. It was a 2 letter answer so no work involved. It didn't even take me a minute to do it. Naturally, me and my partner both passed. The lab itself wasn't too hard. It was writing the chemical equations at the end, which got me. I do not believe we did net ionic equations for redox, so we had o figure that out ourselves. In the lab, we combined a metal and a liquid compound. We were to see if there was any bubbling or fizzing or color change to indicate if the reaction took place. Then we had to make our own reactivity series. Calcium was on top because it reacted with all the compounds and lead was placed at the bottom as it didn't react with any of them. Calcium reacting is kind of cool as it fizzes and creates smoke. Overall, this lab was pretty fun.



Redox Lecture

This lecture was not something I would have expected. We were supposed to listen to the lecture before Thanksgiving break. But due to change of plans by Mrs. Frankenberg, we had to listen to the lecture the day we came back. She said that this lecture was going to be one of the  hardest to understand. But when we listened to the lecture, it wasn't too hard to understand. I actually felt confident about this unit. This was the me, 2 days ago. Here I am now, wondering what I am doing with my life.... I have no clue what these problems are talking about and I feel like I am gonna cry. Mostly because I know the test is gonna be really hard. I did some of the practice tests and they weren't too hard. I think I should be somewhat okay. We will see what happens.

Monday, November 23, 2015

Weekly Quiz over Chemical Reactions

This weekly quiz wasn't too bad. It was nothing compared to the previous quiz. This one was really easy. The part that helped me the most was the fact that there was no review on the quiz. And this lesson itself isn't too hard. I didn't spend too much time studying. I studied about 15 minutes in my math classroom. I kind of remember the solubility rules of the top of my head now. Everything was going well, but then my friend told me that there were a couple questions about a precipitate. I forgot what that meant so I got nervous. I tried finding it in my book, but then I saw my friend. I asked her and she told me that a precipitate is the driving force. After I learned that, I was confident again. I answered every question and only guessed on one. This equation was kind of hard to balance so I kind of gave up and guessed an answer. A lot of people said that I guessed the right answer so I was happy. I think this might have been my first hundred in the class. Hopefully, the unit exam is also this easy.

Solubility Lab

This was the first lab for the Chemical Reactions unit. This lab was quite interesting. As usual, there was a lab quiz, but whether you fail or pass, you get to do the lab. The pre-lab question wasn't too hard. Again, there was a partner A and B and I was partner B, again. As usual, partner A gets the easy question and my partner got done in 10 seconds. It didn't take me too long though. I finished in about 2 minutes. We both got it right and entered the lab. The lab was basically dropping two liquids and watching to see a color or substance change. It was kind of cool in the beginning, but it got boring towards the end. This lab wasn't that special so there isn't much to talk about. After the lab, we were told to write the equations for the ones that worked during the lab. This was a lot of work. Took me a whole 15 MINUTES!!! My hand hurt a little after writing 2 pages of chemical equations. I was tired, but then I got over it. And then I turned it in. I took a couple pics. Too bad they aren't selfies... :/ Selfie with the well thingy is kind of hard.