Lab Day 2

Today we finished the Copper (II) Chloride lab. My partner and I determined that our iron that was used had a 3+ charge. The lab was fun and very helpful in practicing our stoichiometry skills and actually applying them to a real problem that we collected data for.

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Exam Thoughts

I thought the exam was okay, but I think I could have prepared for it more. Next time I am going to do the problems in the book, all the practice test and watch videos on the topic. Hopefully next semester will go better!

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Exam Moved to Tomorrow!

Thank you to Mrs. Frankenberg for moving the exam to tomorrow. The exam will be over everything we have learned in chapter 9, here are some links to help study for the test!






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Stoichiometry
Balancing Equations
More Stoichiometry
Percent Yield
Stoichiometry Video
Sample Problems

Copper (II) Chloride Lab

Last week we spent two days in lab. The first day my partner and I placed an iron nail in a jar of Copper (II) Chloride and water and let it sit over night. The next day we removed the nail and cleaned off the copper with hydrochloric acid and distilled water. It was cool to see all the copper that was left in the jar after cleaning it.

Combustion Reactions

In  combustion reaction a hydrocarbon combusts and it always produces carbon dioxide and water. Also in order for this reaction to take place oxygen has to be present. http://i.ytimg.com/vi/sgHDzTH_GyU/maxresdefault.jpgbe

Unit Exam

Today we had our unit exam. I believe that the exam was somewhat easy, however a few of the questions were difficult. I hope that i did well on this exam!


Helpful Links
Reactivity Series
Oxidation Rules
Combustion Reactions
Balancing Equations
Net Ionic 













Equationshttp://tse4.mm.bing.net/th?id=OIP.Mb32e7770268a02eed1d62904f5806208H0&pid=15.1

http://www.docslide.com/assets/images/large/2011/07/9244-combustion-reactions-p1.gif

Solubility Rules Lab

Today in class we performed a solubility rules lab. The lab was used to determine whether certain chemicals would react or not. When the reactions did occur they would create a solid or color change.

 http://tse3.mm.bing.net/th?id=OIP.Md9e9add651984c67f165ba6aefbec7f5H0&pid=15.1Solubility 




Solubility Rules

Finally Took My Quiz

After being absent the days before Thanksgiving I finally made up my quiz. I don't believe it was too difficult. The hardest part for me was correctly balancing all of the equations and getting the correct sum of coefficients.

Metals Lab

Yesterday we did a lab in class to test the reactivity of certain metals. The most reaction metal was calcium, it reacted with all of the chemicals it was placed with.

Double Replacement

Double replacement reactions occur when both chemicals are ionic. When a double replacement reaction occurs the first element of each chemical switches, one of the products therefore should produce a solid. After the reaction takes place the equation then has to be balanced by adding coefficients where necessary.

Post Exam Thoughts

After the exam yesterday I am unsure of how I did. Some of the questions were rather easy and I figured them out quickly. Other problems on the other hand weren't as easy and required the memorization of certain polyatomics.

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Little encouragement for those of us who don't think we did well on this exam.

A few more helpful links-
Mass Percent
Converting Moles Video
More About Empirical Formulas

Some Helpful Links...

Mole Conversions
Molecules to Moles
Empirical Formula

Hydrate Lab

Although me and my partner did not participate in this lab, the lab was used to determine the chemical formula of CuSO4*nH2O. In order to do this a Bunsen burner was used to heat up and remove the excess water. Through calculations the final answer for n could be found. Kelly and her partner were able to do the lab and she is featured in this picture, thank you Kelly!

Chloride Lab

In this lab my partner and I had to determine the chemical formula of zinc chloride. In order to do this we had to heat HCl and zinc until all water was evaporated. Using the data collected we did several calculations we got a number close to the correct formula which is ZnCl
2.

   http://www.rsc.org/learn-chemistry/content/filerepository/RWS/00/005/525/RWS00005525-L.PNG

Converting Grams to Moles Lab

In lab we practiced converting moles to grams. In order to do this we had to take one mole and divide it by the atomic mass of the object. A helpful tool in completing this task was the mole road map which we will soon have to memorize for the test.

Last Meal Party

In chemistry today everyone brought in a dish from their last meal conversion project. The project was to help us understand how to convert measurements from one unit to another. The project was fun and helpful in reinforcing what we learned over the unit.

End of Matter and Measurement

Today we took the final quiz on matter and measurement. There were a lot of density and conversion questions. The questions were easy to make a mistake on and required a lot of attention to make sure they were completed correctly.



http://zebelmanj.victorschools.org/Images/density%20column.jpg

Here are a few more helpful links:

Density
Common conversions

Matter and Measurement Quiz

I believe that the quiz was rather easy. There were just a few questions I was not sure on, such as the significant figure problems.



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Here's some links to help with matter and measurement:

Significant Figures Video
Significant Figures Rules
Accuracy versus Precision
Converting Units

Mole Day

To celebrate mole day our chemistry class had a party. We also all made a mole with a theme. I think the moles were very creative and one of my favorites was the mole dancer.

Pre-Test Thoughts

I believe that the pre-test was semi-difficult. I recognized hetero- as being different and homo- as being the same from biology last year. Although I did recognize these words I did not know which zeros were considered significant. Overall I did not know much on the test.

Final Unit Test Thoughts

I believe the test was fairly easy. There were only a few questions a wasn't sure about, but over all the half-life and average mass questions were not too difficult.

Dating- Radioactive Style Lab

This lab was used to demonstrate how half life works. In the lab there were 567 pieces of paper that were double sided, one side color and one side white. In order to represent half life my partner and I shook up the paper pieces and dumped them out separating the ones that landed on the color side form the ones that did not. We then counted the colored pieces which represented the amount that decayed and repeated the process.

Websites:
Uses of Radioactive Dating
 Radioactive Dating

Radioactive Decay

http://edtech2.boisestate.edu/lindabennett1/images/alpha%20beta%20gamma%20diagram.gif


There a three types of radioactive decay, beta, gamma, and alpha. In Alpha decay the atomic number decreases by 2 and the mass number decreases by 4, in Beta decay the proton count increases by 1 and the mass doesn't change, and in Gamma decay there is no change in the charge.

Websites:
Nuclear Chemistry
Video on Radioactive Decay

Beanium Lab

In the Beanium Lab my partner and I counted how many beans there were all together and then counted out how many beans there were of each kind (white, black, red, and pinto).We then weighed each type of bean and
divided the mass of that type of bean by the amount of bean present to get the average mass of one bean. After figuring out the average mass of each type of bean my partner and I found the average atomic mass of beanium by multiplying the percent abundance of the isotope by the average mass of the isotope, and then we added them together.

Websites: Calculating Average Atomic Mass

Chapter 3

http://study.com/cimages/multimages/16/earlyatomic_models_1.jpg

In Dalton's Atomic Theory it originally stated that all elements contain atoms, all atoms of a given element are identical, atoms of different elements are different, compounds consist of the atoms of different elements, and atoms are indivisible and are not created or destroyed in chemical reaction. However the idea that all atoms of a given element are identical and that atoms are indivisible is not true today.

Websites: Dalton's Atomic Theory
                 More on Dalton's Atomic Theory

Thoughts about Atomic Structure and Radioactivity

On the pre-test for this unit I did not know many of the answers. I recognized the terms Alpha decay and Beta decay, but did not recognize many of the other questions. I hope to learn a lot throughout this unit and improve my knowledge of atomic structure and radioactivity.

Final Nomenclature Thoughts

I believe the nomenclature unit was fairly easy. I sometimes struggled with naming acids because of all of the memorization required. However, I really enjoyed learning about the different types of naming and I enjoyed the Type II naming the most.

Nomenclature Post Number 1

In the Nomenclature Unit I learned about three different naming methods. Type I binary compounds includes a metal and non-metal, Type II Ionic Binary Compounds involved transition metals and non-metals which required Roman numerals when naming. The final was Type III and included two non-metals, requiring prefixes such as mono- or di-.

Introduction Page

My future goals include attending college at the University of Alabama and getting my PhD. In my free time I enjoy hanging out with my friends, watching football games and creating art. I'm involved in many clubs and activities and volunteering in my community. My main goal for Chemistry is to learn something new everyday.