Thursday, April 2, 2020
Saturday, March 28, 2020
CELEBRATE EARTH DAY
Hi Gundy Chemistry Students!
I received this information about Earth Climate on an email and I thought to share it with my Chemistry students.
Why? How is this issue related to you?
Well, you live in this beautiful Planet, you breath the air, you wonder about many of the marvelous life forms this Planet supports and, yes, directly or indirectly, we all participate in polluting it in many ways.
Feel free to join the websites and learn more about this serious issue and how we can help to improve it and save our Planet.
"Earth Day Live 2020 is less than a month away.
From April 22 to 24, young people and adults will come together for a three-day live stream event focused on climate action.
Earth Day Live is a 72-hour live stream and online mobilization that aims to engage people across the country and the world in collective action to protect their climate and communities. The live stream will include training sessions, performances, and appearances to keep people engaged, informed, and inspired, with speakers including celebrities, politicians, scientists, and youth activists."
Learn more about Earth Day Live at earthdaylive2020.org
Here are other helpful links to learn about climate change action:
Strike With US Coalition - https://strikewithus.org/
Earth Day Action Hub - https://www.earthday.org/take-action-now/
Green New Deal - https://www.sunrisemovement.org/green-new-deal
Earth Day Action Hub - https://www.earthday.org/take-action-now/
Green New Deal - https://www.sunrisemovement.org/green-new-deal
Friday, March 27, 2020
INTRO TO STOICHIOMETRY: THE MOLE AND MOLAR MASS
WORKING OUR WAY TO STOICHIOMETRY…
Hello Students!
In our approach to continue your academic progress, I am providing you with information about the topics we were going to cover in class this semester. I highly suggest you read the notes and watch the videos I am including in my blog.
Please, practice the problems presented in the videos and notes to check your understanding on the subjects presented to you. You have my email address and can always check with me through it.
These assignments are an introduction to STOICHIOMETRY. However, we will also need to cover “Balancing Equations” before getting in full into STOICHIOMETRY.
For now, you will need a good understanding of what a “MOLE” is and how to calculate “MOLAR MASS.”
THE MOLE CONCEPT
NOTES:
Moles
The mole is the "counting unit" used by chemists to indicate the number of atoms, ions, molecules, or formula units present in a particular chemical sample. The mole is similar to other counting units that you've used before....pair (2), dozen (12), and gross (144). One mole of a compound contains Avogadro's number (6.022 x 1023) of molecules (molecular compound) or formula units (ionic compound).
Chemists defined a mole as the amount of atoms that are in exactly 12 grams of carbon-12, which is Avogadro’s number!
CONCEPTS:
· One mole represents Avogrado’s number of atoms, ions, molecules (covalent bond) or formula units (ionic bond). This is a huge number: 6.022 x 1023
· One mole equals the amount of atoms in 12 grams of Carbon-12
o If you weight 12 grams of Carbon-12 it will contain ONE MOLE which means that it will also contain 6.022 x 1023 atoms because ONE MOLE has 6.022 x 1023atoms
o 12 g C-12 = 1 mole = 6.022 x 1023 atoms
1 mole of Fe contains 6.022 x 1023 atoms 1 mole of Li contains 6.022 x 1023atoms
1 mole of Ca contains 6.022 x 1023 atoms 1 mole of Al contains 6.022 x 1023atoms
Read until you get to EXAMPLE 1: CONVERTING MASS TO MOLES We’ll get to that later)
MOLES VIDEOS:
Tyler DeWitt is a favorite of mine and so is Boozeman. Feel free to Youtube for any videos regarding the concept of Moles. These are just suggestions I think will help you to better understand this very important chemical concept.
https://whttps://www.youtube.com/watch?v=qmCAnw7D17g ww.youtube.com/watch?v=TEl4jeETVmgHow big is a mole? J
HOW TO CALCULATE MOLAR MASS
NOTES:
http://www.occc.edu/kmbailey/Chem1115Tutorials/Stoichiometry_Molar_Mass.htm
Formula Weight (FW)
Use to calculate the molar massof ionic compounds (ionic bond). The molar mass is based on the atomic weight of each atom (this is the numerical equivalent to the atomic mass unit or “amu” you find in the periodic table).
The units you will use are grams/moles or moles/grams instead of “amu.” You must use the periodic table in order to calculate molar masses since you need to find the “amu” of each atom and change the units from “amu” to grams/mole.
Sum of the atomic weights for the atoms in a chemical formula
· The formula weight of calcium chloride, CaCl2, would be
Ca:1(40.08 g) + Cl: 2(35.45 g) The formula unit has ONE atom of Ca and TWO atoms Cl. Notice I am using the units of grams instead of “amu.”
Don’t forget to multiply the amu by the subscript which tells you how many atoms of each kind you have. Again, in this formula, chlorine has TWO atoms and you must multiple the “amu” you find in the periodic table by 2 in order to get the correct mass for Cl2
Adding the masses of Ca and Cl2 you get 110.98 grams/ mole of CaCl2
This means that there are 110.98 grams in ONE mole of CaCl2
Molecular Weight (MW) Use to calculate the molar massof molecules (covalent bond)
• Sum of the atomic weights of the atoms in a molecule. The process to calculate the molar mass of MW is the same as for FW as explained above
• For the molecule ethane, C2H6, the molecular weight would be
C: 2(12.01 g) + H: 6(1.008 g)
Molar mass of ethane is 30.07 g/mole. One mole of ethane contains 30.07 grams
PRACTICE:
http://misterguch.brinkster.net/PRA001.pdfWITH ANSWERS AT THE BOTTOM
https://www.everettcc.edu/files/programs/academic-resources/transitional-studies/support/tutoring-center/chemistry/w339-molar-mass-worksheet.pdf WITH ANSWERS AT THE BOTTOM
VIDEOS:
Tyler DeWitt is a favorite of mine and so is Boozeman. Feel free to Youtube for any videos regarding the concept of Molar Mass. These are just suggestions I think will help you to better understand this very important chemical concept.
Monday, August 26, 2019
TIMELINE OF ATOMIC HISTORY
STUDENTS,
Watch this video and fill out the chart provided in class. Follow the verbal instructions given in class.
https://www.youtube.com/watch?v=NSAgLvKOPLQ
Watch this video and fill out the chart provided in class. Follow the verbal instructions given in class.
https://www.youtube.com/watch?v=NSAgLvKOPLQ
Thursday, April 18, 2019
Properties of Water
Students,
Please, watch these videos to help you better understand and answer the questions on some parts of the labs we did in class. Remember, "filet mignon" is what I want.
Feel free to watch any other videos pertaining these subjects. The more you learn, the more you know.
https://www.youtube.com/watch?v=wTuRmwSkuzQ
https://www.youtube.com/watch?v=6WunMIp9huM
https://www.youtube.com/watch?v=Nxkjn-XhgE0
Please, watch these videos to help you better understand and answer the questions on some parts of the labs we did in class. Remember, "filet mignon" is what I want.
Feel free to watch any other videos pertaining these subjects. The more you learn, the more you know.
Soaps and Detergents
https://www.youtube.com/watch?v=h_DqigF1rhchttps://www.youtube.com/watch?v=wTuRmwSkuzQ
https://www.youtube.com/watch?v=6WunMIp9huM
https://www.youtube.com/watch?v=Nxkjn-XhgE0
Chromatography
Magic Milk
Tuesday, October 9, 2018
Monday, September 17, 2018
SCCMA and Standford Transformative Experience in Medicine
https://stemprogram.wordpress.com
Brandon Pham is one of the student directors of a program called SCCMA Stanford Transformative Experience in Medicine (SSTEM), which is a 3-week program at Stanford aimed at providing high school students from primarily underrepresented backgrounds with exposure to the medical field that would have otherwise been difficult to obtain.
The program will take place during 3 Saturdays on October 20th, October 27th, and November 3rd, 2018 from roughly 8am to 12pm. Students will have a chance to hear talks from physicians and have the opportunity to participate in hands-on dissections of cow hearts, pig eyes, etc. More information about our organization can be found below:
They have extended the application deadline for this opportunity to Friday, September 28th, 2018. The link to the application can be found in website above.
If you have questions, you can reach Brandon Pham at
Brandon Pham
Stanford University School of Medicine | MD Candidate
UCLA | BS Microbiology, Immunology, & Molecular Genetics
P (714) 369-4364 | E bhpham@stanford.edu
Stanford University School of Medicine | MD Candidate
UCLA | BS Microbiology, Immunology, & Molecular Genetics
P (714) 369-4364 | E bhpham@stanford.edu
WELCOME TO SSTEM!
Rosa, a Stanford medical student, guiding students through animal heart dissections.
UPDATE (9/15/2018): Our application deadline for Fall Session 2018 has now been extended to Friday, September 28th, 2018 at 11:59pm! Please visit the Application page for more information.
The Santa Clara County Medical Association (SCCMA) and the Stanford chapter of the American Medical Association welcome you to the SCCMA
and Stanford Transformative Experience in Medicine (SSTEM) program for the 2018-19 academic year!
and Stanford Transformative Experience in Medicine (SSTEM) program for the 2018-19 academic year!
The SSTEM program is aimed at providing high school students with exposure to the medical field that would have otherwise been difficult to obtain. By giving local students an opportunity to explore health professions, our hope is that this program will inspire local students to pursue a career in medicine and to serve the future healthcare needs of the community.
SSTEM Fall 2016 participants
Our application for Fall Session 2018 is now open! Please visit the About Us and Application pages for more information and eligibility for the upcoming session.
We look forward to having a great year with you!
-Your 2017-18 SSTEM Stanford School of Medicine Co-Directors (Brandon Pham, Hriday Bhambhvani, Kelly Zhang, Kim DeBruler, Sandy Wong, and Will Tate)
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