Nail Lab Day 1 and 2

We did a lab using a nail and a chlorine solution. We place the nail inside the solution and let it sit there for 2 to 3 days. Afterwards we can see the chemical reaction taking place. Within 5-10 minutes you can see the  rust begin to form. It was a really cool lab.

The next day we isolated the copper from the solution and the nail. The reaction with the iron nail left the copper remaining in the jar with the solution. We rinsed the solution out with hydrochloric acid and distilled water. This helped isolate the copper. The nail seemed to look like it had parts of it melted off. It was really cool.

Percent Yield

This was our last day of notes this semester in chemistry. It was probably the easiest lesson we will have all year. Percent yield is basically finding out the percentage of the product that was actually formed. We use the actual yield from a lab and divide it by the theoretical yield of the product and multiply it by 100. It is a fairly easy concept.
https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/limiting-reagent-stoichiometry/a/limiting-reagents-and-percent-yield

Limiting Reagents

This topic is just adding on to the knowledge of what we learned the other day. We compare the yields that we get of the product from the two reactants. The reactant that produces the least amount of product is the limiting reagent. It limits the amount of product that the reaction can produce.
These are some helpful links that I have found.
https://www.chem.tamu.edu/class/majors/tutorialnotefiles/limiting.htm
https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/limiting-reagent-stoichiometry/v/stoichiometry-limiting-reagent

Stoichiometry

This unit was over stoichiometry which is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data. That is the literal meaning but it is just the use of reactants or products to determine quantities among them. It is fairly easy since it is mostly conversions. Last time we did conversions I did really well on it and hopefully it wont be any harder than we have seen it to be today.
Here are some links to help with it.
https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome
http://chemwiki.ucdavis.edu/Analytical_Chemistry/Chemical_Reactions/Stoichiometry_and_Balancing_Reactions
http://www.chem4kids.com/files/react_stoichio.html

Comments proof

No I don't have to rely on others to print out my comments. Shutout to Eric for giving me the idea. Thanks buddy!

Chemical Reactions Unit test

Today we took the unit test over Chemical Reactions. It wasn't extremely difficult, but there were questions that were fairly difficult. I really can't tell how I did. It can either be really good or really bad. I hope it is really good since my grade is at a good place right now. Hopefully for the next unit  I can build on the topics I learn and study to get a higher grade.

Chemical Reactions Lab

Last week we did a lab where we performed a number of different chemical reactions. We did it to determine if precipitates would form. It was practice for the double replacement reaction. We visually got to see the chemical changes that were going off and the change of the solutions to produce the new product was the proof that the reaction occurred. This lab was really cool and fun. I enjoyed doing it and it really helped me understand double replacement reactions.

Metals Lab

This week we did a lab in which we were reacting a metal with some other substance. This lab was used to help us understand single replacement reactions. It helped me understand it since it was many problems that seemed like they would be a topic on the test. This was a very interesting and fun lab to do. I hope we have more like this. We now have to prepare for the test on Thursday. Hopefully it isn't too hard.

Here are some links to help:
Chem med

http://www.chemteam.info/Equations/SingleReplacement.html

https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/balancing-chemical-equations/v/balancing-chemical-equations-introduction

http://chemwiki.ucdavis.edu/Analytical_Chemistry/Electrochemistry/Redox_Chemistry/Oxidation-Reduction_Reactions