Please click the image to go to the download page...
Thursday, November 26, 2009
Thursday, November 19, 2009
Friday, November 13, 2009
Thursday, November 12, 2009
Friday, October 2, 2009
The Element Song :)))
Lyrics:
There's antimony, arsenic, aluminum, selenium,
And hydrogen and oxygen and nitrogen and rhenium,
And nickel, neodymium, neptunium, germanium,
And iron, americium, ruthenium, uranium,
Europium, zirconium, lutetium, vanadium,
And lanthanum and osmium and astatine and radium,
And gold and protactinium and indium and gallium, (gasp)
And iodine and thorium and thulium and thallium.
There's yttrium, ytterbium, actinium, rubidium,
And boron, gadolinium, niobium, iridium,
And strontium and silicon and silver and samarium,
And bismuth, bromine, lithium, beryllium, and barium.
There's holmium and helium and hafnium and erbium,
And phosphorus and francium and fluorine and terbium,
And manganese and mercury, molybdenum, magnesium,
Dysprosium and scandium and cerium and cesium.
And lead, praseodymium and platinum, plutonium,
Palladium, promethium, potassium, polonium,
And tantalum, technetium, titanium, tellurium, (gasp)
And cadmium and calcium and chromium and curium.
There's sulfur, californium and fermium, berkelium,
And also mendelevium, einsteinium, nobelium,
And argon, krypton, neon, radon, xenon, zinc and rhodium,
And chlorine, carbon, cobalt, copper, tungsten, tin and sodium.
These are the only ones of which the news has come to Hahvard,
And there may be many others but they haven't been discahvered.
Long Test - Energy Metabolism (40 Items)
To my FSIM Biochem Classes...
The questions I have posted for this test are of 2 types: True or False and Identification. The questions will randomly appear as you click the "submit my answer" tab on each page. This means the sequence the questions will follow is unique for each quiz-taker. Make sure you enter the correct spelling of the words for questions under the identification type.
Before starting the test, you will be asked to enter your name (please include your course, year and section, i.e. LEMUEL OWEN H. CABANA FSIM 1I). You are also asked to provide a password. Password for the test is kemkorner.
You are given 30 minutes to finish answering all the questions. Yes, I know I promised I'll give you an hour but, I have taken the test myself and realized that 1 hour is too long a time to allow you to go over your lecture notes (yes, i know that too, hehe!). Your result will appear after the 40th question is answered. I am no longer requiring you to print the certificate generated by the site at the end of the test.
Click the image above to go to the quiz page... Good luck!
Tuesday, September 29, 2009
10-Item Test on Formula Writing
Test your skills in formula writing by taking this 5-minute test.
Click the image to go to the quiz page... Good luck!
10-Item Test on Naming Compounds
Test your skills in naming chemical compounds by taking this 5-minute test.
Click the image to go to the quiz page... Good luck!
Saturday, September 12, 2009
10-Item Test on Energy Metabolism
Test your knowledge in energy metabolism by taking this 4-minute test...
Click the image to go to the quiz page... Good luck!
Thursday, August 6, 2009
Think about this...
Based on the above figures, do you think the 120 grams of glucose metabolized by the brain daily can sufficiently fuel all of the brain's daily metabolic activities? Support your answer with calculations.
Clue: You need to find out the total (estimated) number of brain cells. You also need to use your basic knowledge of mole/mass/number of particles calculations in answering the problem.
Leave your briefly explained answer as comment below. Do not forget to include your name. Submit your calculations separately using 1 short-sized bond paper...
Sunday, July 26, 2009
Saturday, July 18, 2009
Molecular Structures of the Aldoses and the Ketoses
The aldose is named a D or L enantiomer based on the position of the -OH group in the chiral carbon atom farthest from the -C=O (carbonyl) group. For the D-aldoses, -OH is on the right side of the C-atom. The L-aldoses will have the -OH on the left side of the C-atom. The names, of course, will be the same...
Here's the chart of the L-aldoses I have prepared by flipping horizontally the image/chart above. Notice the reversed positions of all the -OH groups in the chiral centers of the molecules.
Since dihydroxyacetone does not have a mirror image (due to the absence of a chiral C-atom in its structure), mirror-imaging will start with the tetroses for the ketoses. The left side of the chart for the ketoses should show the structures of the D-ketoses, the right side will show the structures of the L-ketoses. The chart below shows only the molecular structures of the D-ketoses...
Just click on the images to enlarge them...
Friday, July 17, 2009
Tuesday, June 16, 2009
Biochem Lab Experiments (for Prelim)
Hello again!
This is the link to the download page of your first 6 lab experiments. I’m assuming that since you were able to navigate into this site, you know how to click on links and download files… lol!
Seriously, before anyone attempts to set foot in the labroom, make sure that, aside from the other materials you're asked to bring, you carry a hardcopy of the laboratory activity for the day. Remember, NO HARDCOPY, NO EXPERIMENT and you’ll get 60 for the day.
Other reminders:
1. Make use of short-sized bond paper when printing or photocopying the activity sheets.
2. Brief answers to questions are encouraged. Confine your answers to the spaces provided after each question.
3. Write legibly. Maintain cleanliness of your report papers. Use a pen when writing down your answers. A pencil may be used if you're asked to draw or illustrate certain set-ups.
4. Staple the pages of your report before submitting such to me.
1. Make use of short-sized bond paper when printing or photocopying the activity sheets.
2. Brief answers to questions are encouraged. Confine your answers to the spaces provided after each question.
3. Write legibly. Maintain cleanliness of your report papers. Use a pen when writing down your answers. A pencil may be used if you're asked to draw or illustrate certain set-ups.
4. Staple the pages of your report before submitting such to me.
Thank you very much...
m.cabaña
Monday, June 15, 2009
hello guys!
Welcome to kem korner!
This blog, I hope, will help you, dear students, obtain a deeper understanding of basic and not-so-basic chemistry concepts. For those looking for entertainment, there will be bits of that here although, I'm not yet so sure how I'll go about this "entertainment" thing. But I assure you that this blog will be filled with links, downloadables and test-yourself questions that will help you, in some way, improve your understanding of the world of chemistry.
Suggestions, contributions and reactions, violent or otherwise, are also welcome...
This blog, I hope, will help you, dear students, obtain a deeper understanding of basic and not-so-basic chemistry concepts. For those looking for entertainment, there will be bits of that here although, I'm not yet so sure how I'll go about this "entertainment" thing. But I assure you that this blog will be filled with links, downloadables and test-yourself questions that will help you, in some way, improve your understanding of the world of chemistry.
Suggestions, contributions and reactions, violent or otherwise, are also welcome...
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