LAB 1-3 Separation of a Mixture [Due Wed 9/28]

Hey Everyone, from reading your blogs it looks like you are getting the idea for the general outline and purpose of what we are trying to accomplish with the blog. If there are some comments asking you to add to your blog or edit it, please make the changes, your grade will reflect it.

For this experiment you need to write the normal paragraph summary outlining what you did. After you do that you need to consider the following:

1. Compare the amounts of iron, sand and salt that you had initially in your mixture to the amounts that you recovered. Were they all equal? Propose a reason for each of them being different than expected. I won't accept reasons stating that you measured wrong or did math incorrectly. I am looking for problems with the experiment.

2. How could you have made your separation better? For example: if you had sand left in your iron what could you have done to get it out?

Write a conclusion paragraph explaining how what we did relates to what we are currently doing in class. If you have further questions, this would be the place to ask the questions and address what happened.

Enrichment: Do a little research and find out the steps that are used to manufacture and purify a chemical. The important process here is the purification, because it directly relates to what we are doing in class.

Lab 1-1 Green Stuff [Blog Due Friday 9/23]

Ok, now you have completed your first experiment and have had a little bit of a chance to think about it.

The purpose of the lab blog is to do the thought processing that goes along with the experiences that you had in the experiment.

Your blog post should be outlined as follows:

• A quick summary of the experiment, tell me what you did (a procedure) and what happened (your results). I am usually looking for roughly a paragraph here, you need to provide enough so that I can tell that you understood what you were doing.
• Answers to the lab questions, in this case they are:
• Explain how you can determine if a property of green stuff is a physical property, or a chemical property.
• Describe the different phases of matter of the chemicals (water is a chemical too) used in this experiment. Make sure to tell how solids, liquids and gases are different.

•  Describe how the material relates to what we have been completing in class. Also this is where you can pose questions that the lab made you think about, I like to see this stuff and respond to it.
• Enrichment Questions: I will at times pose enrichment questions, if you want to get 5/5 on all categories all the time, you will need to answer these. For this experiment, come up with an experiment that you would like to try with green stuff. Its name is copper (II) chloride if you want to do a search.

Lab 1-2 Indirect Measurment [Blog Due Monday 9/19]

First in your blog write a one paragraph summary of the experiment and your results.

Then: Answer these questions

1.     Some methods for finding the diameters and thickness are much better than others. Explain the limitations of using water displacement and a ruler to calculate the thickness.

 

2.     Suggest some sources of error in how you conducted the measurements that might explain any error in your diameter value. 

3.   Describe one problem you encountered in your experiment and tell how you overcame that problem. This could be related to question #2 above, or not.

To conclude your blog entry, explain how you could use a method like the one in your experiment to solve another problem that might not have a clear cut answer.

ENRICHMENT: 

As a person who will soon be paying your way through life, learning to evaluate the “best deal” is an important skill so you can get the most value for your money.  Obtain information about the price and amount of foil in roll of each type of aluminum foil.  Use this information, along with the thickness value for each type of foil, in order to determine which type of foil gives more value.  You may choose to do this by:

a)     showing a mathematical way of figuring this out, OR

b)    describing in writing how you would figure this out. 

Prices:     HD: $3.79 for a roll 70 cm X 6 m

               Regular: $5.79 for a roll 40 cm X 15 m

Welcome to 2011-2012 School Year!!

Dear Students,

I am excited about getting the new school year started. Here is a little about me…..

About Me:

I was born in Rochester and grew up in nearby Honeoye Falls. I graduated from HF-L and from there went to Nazareth College where I majored in chemistry. I graduated and went back for an extra semester in order to student teach. After student teaching I got a job in the Greece School District teaching 7^th grade science for the second half of the year (it wasn’t for me). After that I got hired here at Rush-Henrietta and now it will be my fifth year here!! I just finished my Master’s Degree at SUNY Brockport!! My next step is going to be to apply for doctorate programs and likely become a teacher of teachers.

Family and Stuff

Some of my family is still here in Rochester. My parents moved from Honeoye Falls to Palmyra where they both work, so they are still in town. My little sister just graduated from Nazareth College as a speech pathologist. She just got a job in Orlando, FL and lives down there, I helped her move. I have no pets, but part of me wants to put together an awesome tropical fish tank. My older brother lives in Washington DC and my best friend lives in LA, I miss them both.

Non-School Stuff

I am big time into soccer. I played soccer at HFL and Nazareth. I still play sometimes at TSE or the Sportsgarden, but I am now mainly a referee. I college professional, and summer league games. You can see me on the rhinos games sometimes. I travel a lot of refereeing, all across the northeast. In the winter I ski, I also try to get on my mountain bike whenever I can. I am not a huge gamer, but in my occasional free time you can find me on my PS3 (rewryn).

About this school year

I look forward to this school year and have some goals. The main one is for everyone to get a better understanding of Chemistry. I also want to make you guys better problem solvers. You will get better by thinking analytically and working hard. I also want to help my students get ready for college. If I am not totally forth coming with information, it is probably because I want you to do the thinking. I do want you to ask questions and as we get to know each other you feel like you can ask the tough ones when necessary. I wish everyone a safe an successful school year and look forward to working with you this year.

 

Sincerely,

Mr. Andrew Evangelos