Web Resources for Measurement Unit

Here is a list of web resources that really helped me with this project and helped me understand this unit.

1. Metric Kitchen - This was the website given to us by our teacher, Mrs. Frankenberg. This website really helped me convert most of the ingredients in my recipes. Thanks Mrs. Frankenberg.
2. Cooking Measurement Equivalents - I found this link a little after I finished my work for the Last Meal project. I wish I had used these measurement converters. This website converts teaspoons into mLs and grams so this one is technically better than the metric kitchen.
3. Counting Significant Digits - This website is pretty good. If you are unsure about measuring the distance in a ruler or graduated cylinder, this website page is for you. It talks about how to measure the ruler and graduated cylinder the right way. I used this website for learning another concept in this unit. The link to that page will be below.
4. Rounding Significant Figures - This page talks about how and where to round in significant figures. I know that we all know how to round normal numbers in math but this concept in chemistry is actually very confusing. This page kind of helped be understand this concept in a better way.
5. Units and Dimensions - This website is actually very good because it tells you the prefixes for the unit and what they equal. It is generally very hard to remember each one so this website may help you. Also a new thing I learned was that the prefix smaller than pico- is femto-. Femto- is equal to 10^-15, so that is 1000 times smaller than pico-. That was a pretty cool thing I learned. This website also teaches you how to convert. I am pretty good at that so it didn't help me too much.
6. Density Related Problems - If you are looking for more practice questions involving density, this is the website for you. It only has 10, but they are good questions for extra practice. A little extra practice wouldn't hurt, right?

Final Unit Test For Measurement

This test was by far the hardest test I ever took. I really had to use all of my brain to finish this test in time and hopefully correctly. The hardest part about this test was the fact that everything you learned in math till now, is useless for this unit. It was so different from the traditional math that I had such a hard time with it. Also  the problems with significant figures really got me. I mean I got the ones which were like 'find the number with the most number of significant zeros', but the ones involving a lot of math calculations were hard. I was especially very confused about whether to punch it all in the calculator and round in the end or round every time. I was unsure about pretty much every answer on the test. If this unit is gonna be on the final exam, I am gonna need a lot of review. Well I am hoping for atleast a not bad grade because I don't want my quarter and semester grade to go down too much. Wish me luck for future tests guys. I need it. Peace out!

I need to improve on the measurement unit....

Source for the picture:

1. Measurement Process. (n.d.). Retrieved October 29, 2015, from http://www.zenoviaandrews.com/uncategorized/measurement-process

Measurement Weekly Quiz #1

This was by far, the only test I thought I did good on. Turns out, I got a bad grade... I thought I did great on this test, but I didn't. I still haven't seen which questions I got wrong. I will find out on Thursday, probably. I missed 4 questions, and it brought my grade down. That's why I don't like tests which have less than 30 question. If I miss a couple questions, I drop a lot of percentage points. Well, there wasn't really anything I didn't understand on the test. The only doubt I had was about the problem where I didn't get an exact answer. I was close to the answer but I was a little off. Well, I guess I have to find out later about what answers I got wrong. I also have to take the PSAT tomorrow. Wish me luck on the PSAT and the Unit exam guys. Gotta go. Cya!



Picture sources:

1. The source for the A+
2. The source for the arrow
3. The source for the B+

Aspirin Lab Day 2

This is the second day of the aspirin lab. On this day, we did the last 2 steps of the lab. After we let the mixture sit overnight, the crystals formed the right way. If it didn't we would have had to scratch the side of the beaker with a stirring rod to induce crystallization. But, we didn't have to do that. To collect the product, we used a buchner funnel and filter paper to separate the water and the product. We also used a vacuum made by a tube and running water to suck out all the water on the aspirin. This process is called suction filtration. After we ran it for about 15 mins, we placed the filter paper and aspirin on the lab bench. We are gonna let them completely dry over the fall break and then we are going to measure it and see what percent yield we had. This is the end of day 2.

Sources;

For pictures:

1. Buchner Funnels. (n.d.). Retrieved October 8, 2015, from http://orgchem.colorado.edu/Technique/Equipment/Benchglass/Buchnerfun.html

Aspirin Lab Day 1

In this lab we created aspirin. We used salicylic acid and acetic anhydride to make aspirin. Sulfuric acid was the catalyst. We split the lab into 2 days. In day 1, we measured out 5 grams of salicylic acid. To this we added 7 ml of acetic anhydride, Then we added 8 drops of sulfuric acid with a simple pipette. After this we mixed the contents using a stirring rod. Then we heated the mixture using a hot water bath and a hot plate. We heat the mixture for 15 mins after it begins to boil. When the mixture is heated, acetylsalicylic acid and acetic acid is formed. After this we cool the mixture by removing it from the hot plate and placing it on a hot pad. After 3 mins, we slowly add 15 ml of ice cold water to the flask to remove the excess acetic anhydride. Then we poured the contents into a smaller beaker and covered it with a post it and let is sit overnight. This is the end of Day 1 of the aspirin lab.

Sources:

For picture:

1. Aspirin Powder - Buy Aspirin Powder, Price , Photo Aspirin Powder, from Tradeniger Impex Private, Limited. Pharmaceutical Drug on Allbiz Mumbai India. (n.d.). Retrieved October 8, 2015, from http://mumbai.all.biz/aspirin-powder-g551089#.VhajOvlViko

Web resources for Unit 2

Here is a list of web resources I have found that really helped me with this project.

1. Stellar Database - This contains all information on any known star.
2. 100,000 stars - This is an interactive experiment set up by google that shows s number of stars and some information on them.
3. Element list chart - This shows the elements for the star with a specific spectral class.
4. Star's Stellar Classification - This shows the stellar classification/spectral class for the listed stars.
5. Interactive Periodic Table - This is an online interactive periodic table. It is very useful. Especially if you have a periodic table which does not have the information you require.
6. Atomic Structure and Radioactivity - This is an online lesson on the atomic structure and radioactivity unit. This is what I used to do the reading guides. The reading guides really help me study. This online lesson is very close to the lesson in our textbook.

Unit Test for Atomic Structure and Radioactivity

I think I did pretty good this test. I was unsure about a few things on the test, but it was fairly easy. I am expecting a pretty good grade on this test. I didn't have too much time to study for it though. I kind of had to fix some things on my star log project. But, I think I did alright. This unit moved very quickly. It all got wrapped in 2 weeks. All right then, that's it for today. Cya'll later.