Lewis Dot Structure

In chemistry class, we learn about a topic called Lewis Dot Structures Diagram where we need to draw dots and bondings between atoms. In this unit, we use Lewis Dot Structures (electron dot diagram) to show the bonding between atoms of a molecule and the lone pairs of electrons that may exist in the molecule. To draw Lewis Dot Structures, first we need to know the valence electron of the atom (an outer shell electron); the second step will be taking the number of valence electrons and draw it as dots around the atom.  

For example, Carbon has 4 valence electrons (an outer shell electron)

We can also draw bonding between two or more atoms. In a covalent bond, when two electrons bond together, we can draw a line to connect between the two electrons. For example Carbon and Oxygen. The two atoms combine together so that they can share electrons with each other to get eight electrons–which is the number that they want.   

Khmer Poem Activity

I have written my own poem in Khmer and it is about how my life has changed when I came to the Academy. I was so emotional when I first started to write the poem because it reminded me of my life without this amazing place. 

ជីវិតខ្ញុំ

ជីវិតកើតមកខកចិន្តា កើតក្នុងគ្រួសារដែលគ្មានសុខ

ជាតិមុខចាំជាតិរំពឹងទុក ចង់បានក្តីសុខក្នុងជាតិនេះ ។

 

ហេតុអ្វីជីវិតកើតខុសគេ មានពុកមានម៉ែតែគ្មានព្រទ្យ

តំណើរជីវិតត្រូវពង្រាត់ ក៏ព្រោះតែទ្រព្យត្រូវព្រាត់ប្រាស់ ។

 

ប្រវត្តិជីវិតដ៏សែនខ្មៅ ឈឺដូចដំបៅដែលធ្វើទុក្ខ

ជីវិតគ្មានព្រទ្យគ្មានក្តីសុខ គ្មានអ្នកយល់មុខព្រោះគ្មានសក្តិ ។

 

ដំណើរជីវិតខ្មៅមួយនេះ បង្រៀនឲខ្ញុំចេះខំប្រឹង

ចេះសា្តប់ទូន្មានចេះញញឹម ហើយចេះសង្ឃឹមលើខ្លួនអែង ។

 

ដល់ថ្នាក់ទីបួនខ្លួនសប្បាយ ជីវិតនឿយណាយត្រូវបាត់បង់

បានប្រឡងជាប់ដោយការខំ ធ្វើមិនបន្លំព្រោះខ្ញុំរៀន។

 

នេះហើយជីវិតរបស់ខ្ញុំ ខំប្រឹងសណ្តំសណ្តាប់រៀន

កែប្រែជីវិតពីអត់ឃ្លាន មកផ្គុំហើយច្រៀងកែវាសនា ។

 

Elon Musk’s Biography

Elon Musk was born on June 28, 1971, in Pretoria, South Africa—he is currently 47 years old. He obtained his Canadian citizenship in 1989 because it was easier for him to obtain the American citizenship; he became the American citizenship in 2002.  Musk was a son of a Canadian mother and a South African father. At the age of 10, his parents got divorced while Elon started to develop his interest in computers. He taught himself programming when he was 12, and he made his first ever software game called Blaster. Later in his life, Musk took two years at Queen’s University and transferred to the University of Pennsylvania. He graduated from Wharton School and majored in Physics and Art in Economics. When Musk was 24 years old, he moved to California to pursue a Ph.D. in physics at Stanford University. Two days later, Musk left the Ph.D. program to start a business. In 1995, Musk and his younger brother started Zip2, “a web software company that would help newspapers develop online city guides.”

Musk revolutionized online payments: he was a co-founder of a really famous online transfer service called PayPal–was initially called Zip2. In 2002, PayPal was bought by another big company called eBay for 1.5 billion dollars in stock, and Musk received 165 million dollars from eBay. Moreover, he is the CEO and CTO of SpaceX, one of the most famous space companies in the world, founded in 2002. SpaceX is a space company that does design, “ manufactures and launches advanced rockets and spacecraft with the goal of reducing space transportation costs and enabling the colonization of Mars.” He is also the CEO of Tesla, a car company that manufactures electric cars. One of its functions that make Tesla is very well-known is a featured called AutoPilot. He is known for the chairman of the Solar City which concentrates in solar energy services.  Currently, he is one of the most intelligent Engineers in the world because of his crazy ideas and mindsets.

All of his inventions are constantly changing the world. For example, Tesla is an environmentally friendly technology which it only required electricity in order to run the process. This means that Elon Musk wanted to end the use of gasoline because it has an immense effect in term of climate change. His private space company, SpaceX, is trying to find a livable planet for humans because he wanted to prevent the from overpopulated. Moreover, people don’t need to carry out their money to buy what they wish because people can use PayPal instead of the actual currency.

In the future, Elon plans to sent people to Mars by 2025 because he wants to colonize the planet and make it into a living place. He even wanted to create tunnels, a new future transportation system. To begin the project, Elon’s objective is to build a network of underground tunnels in LA that move cars on electric skates at the speed of 125 mph. In the next 20 years, cars will not have steering wheels, so they are able to go fully autonomous in the long-term. He even said that “Aircraft and ships and all other forms of transport will go fully electric. Not half electric, but fully electric.” I think these goals will be achievable for him since he is a crazy and intelligent inventor of the century.  

Elon Musk credits his success to three important steps. The first step is to focus on more than one field; when Musk was back in school, he majored in two areas: Art in Economics and Physics. Musk had been interested in space and rockets for so long that he spent a lot of his own time reading textbooks and consulted with experts about rocket science and engineer. “His ability to understand the details of space and SpaceX products helps to connect with staff and build better products.” Musk studies in many different fields; he is able to understand deeper principles, and applies the principles “ to their core specialty.” The second step, learn to transfer knowledge. When Musk was in school, he is known to read two books per day: science fiction, philosophy, religion, and programming. This allowed him to get exposed to a variety of subjects and principles. Third think different. Elon ambition was to introduce the world to new amazing technology that nobody have ever thought of before. For example, Musk and his space company, SpaceX, was able to create a self-landing rocket. This are the three steps that he took to become one of the most famous engineer in the world. In conclusion, I think he is the top ranking inventor of the century by introducing new inventions to the world.  

References:

https://www.biography.com/people/elon-musk-20837159

https://www.oakton.edu/students/8/iiliev5728/Final%20Progect/Elon_Musk_Biography.htm

https://www.investopedia.com/university/elon-musk-biography/elon-musk-success-story.asp

https://www.quora.com/What-has-Elon-Musk-achieved

https://www.investopedia.com/university/elon-musk-biography/elon-musk-early-life-and-education.asp

https://ecotechdaily.net/how-elon-musk-is-changing-

Literacy Unit-American History

Part of the Literacy class this year, we started learning about the American history by reading a myriad of interesting texts. Our facilitator, Cara, gives us the printed-texts because she wanted us to practice our annotation skills so that we can implement it to the upcoming SAT test. For each text, Cara designates us to find the words that we struggle with, and we have to find the meaning for each word and use it in a sentence.

Excerpt From The Jungle is my favorite text of all because after reading the text, I always wonder about where my food comes from.

The Jungle: With one member trimming beef in a cannery, and another working in a sausage factory, the family had a first-hand knowledge of the great majority of Packingtown swindles. For it was the custom, as they found, whenever meat was so spoiled that it could not be used for anything else, either to can it or else to chop it up into sausage. With what had been told them by Jonas, who had worked in the pickle rooms, they could now study the whole of the spoiled-meat industry on the inside, and read a new and grim meaning into that old Packingtown jest—that they use everything of the pig except the squeal.

Jonas had told them how the meat that was taken out of pickle would often be found sour, and how they would rub it up with soda to take away the smell, and sell it to be eaten on free-lunch counters; also of all the miracles of chemistry which they performed, giving to any sort of meat, fresh or salted, whole or chopped, any color and any flavor and any odor they chose. In the pickling of hams they had an ingenious apparatus,1 by which they saved time and increased the capacity2 of the plant—a machine consisting of a hollow needle attached to a pump; by plunging this needle into the meat and working with his foot, a man could fill a ham with pickle in a few seconds. And yet, in spite of this, there would be hams found spoiled, some of them with an odor so bad that a man could hardly bear to be in the room with them. To pump into these the packers had a second and much stronger pickle which destroyed the odor—a process known to the workers as “giving them thirty per cent.” Also, after the hams had been smoked, there would be found some that had gone to the bad. Formerly these had been sold as “Number Three Grade,” but later on some ingenious person had hit upon a new device, and now they would extract the bone, about which the bad part generally lay, and insert in the hole a white-hot iron. After this invention there was no longer Number One, Two, and Three Grade—there was only Number One Grade. The packers were always originating such schemes—they had what they called “boneless hams,” which were all the odds and ends of pork stuffed into casings; and “California hams,” which were the shoulders, with big knuckle joints, and nearly all the meat cut out; and fancy “skinned hams,” which were made of the oldest hogs, whose skins were so heavy and coarse that no one would buy them—that is, until they had been cooked and chopped fine and labeled “head cheese!”

It was only when the whole ham was spoiled that it came into the department of Elzbieta. Cut up by the two-thousand-revolutions- a-minute flyers, and mixed with half a ton of other meat, no odor that ever was in a ham could make any difference. There was never the least attention paid to what was cut up for sausage; there would come all the way back from Europe old sausage that had been rejected, and that was moldy and white – it would be dosed with borax and glycerin, and dumped into the hoppers, and made over again for home consumption.

There would be meat that had tumbled out on the floor, in the dirt and sawdust, where the workers had tramped and spit uncounted billions of consumption germs. There would be meat stored in great piles in rooms; and the water from leaky roofs would drip over it, and thousands of rats would race about on it. It was too dark in these storage places to see well, but a man could run his hand over these piles of meat and sweep off handfuls of the dried dung of rats. These rats were nuisances, and the packers would put poisoned bread out for them; they would die, and then rats, bread, and meat would go into the hoppers together. This is no fairy story and no joke; the meat would be shoveled into carts, and the man who did the shoveling would not trouble to lift out a rat even when he saw one – there were things that went into the sausage in comparison with which a poisoned rat was a tidbit.

[5]There was no place for the men to wash their hands before they ate their dinner, and so they made a practice of washing them in the water that was to be ladled into the sausage. There were the butt-ends of smoked meat, and the scraps of corned beef, and all the odds and ends of the waste of the plants, that would be dumped into old barrels in the cellar and left there. Under the system of rigid economy which the packers enforced, there were some jobs that it only paid to do once in a long time, and among these was the cleaning out of the waste barrels. Every spring they did it; and in the barrels would be dirt and rust and old nails and stale water – and cartload after cartload of it would be taken up and dumped into the hoppers with fresh meat, and sent out to the public’s breakfast. Some of it they would make into “smoked” sausage – but as the smoking took time, and was therefore expensive, they would call upon their chemistry department, and preserve it with borax and color it with gelatin to make it brown. All of their sausage came out of the same bowl, but when they came to wrap it they would stamp some of it “special,” and for this they would charge two cents more a pound.


Welcome To Chemistry Class

After the summer break, I was introduced to a complex and rousing class called Chemistry. I was interested in the topic because the only thing I knew about Chemistry was the chemical explosions and other fun lab activities. Before doing the fun stuff with chemicals, our teacher introduced us to the topic of Chemistry and how it is relevant to our daily life. For example, Chemistry is really important to everyday life because it provides us with medicines, food processes, and etc. Currently, we are learning about the periodic table: “a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.” Moreover, we learn how to calculate the atomic mass, the atomic number, protons, electrons and more by using the Ptable. Even though Chemistry is a complex lesson, but I really enjoy it and can’t wait to see the explosion of the chemicals.         

Engineer Strand

In our engineering class, I got an assignment from my facilitator to do research about our desired famous people who took their path in engineering. I picked Elon Musk because his seminal works introduced me to the path of engineering.

     Elon Musk’s Biography  

Elon Musk was born on June 28, 1971, in Pretoria, South Africa—he is currently 47 years old. He obtained his Canadian citizenship in 1989 because it was easier for him to obtain the American citizenship; he became the American citizenship in 2002.  Musk was a son of a Canadian mother and a South African father. At the age of 10, his parents got divorced while Elon started to develop his interest in computers. He taught himself programming when he was 12, and he made his first ever software game called Blaster. Later in his life, Musk took two years at Queen’s University and transferred to the University of Pennsylvania. He graduated from Wharton School and majored in Physics and Art in Economics. When Musk was 24 years old, he moved to California to pursue a Ph.D. in physics at Stanford University. Two days later, Musk left the Ph.D. program to start a business. In 1995, Musk and his younger brother started Zip2, “a web software company that would help newspapers develop online city guides.”

Musk revolutionized online payments: he was a co-founder of a really famous online transfer service called PayPal–was initially called Zip2. In 2002, PayPal was bought by another big company called eBay for 1.5 billion dollars in stock, and Musk received 165 million dollars from eBay. Moreover, he is the CEO and CTO of SpaceX, one of the most famous space companies in the world, founded in 2002. SpaceX is a space company that does design, “ manufactures and launches advanced rockets and spacecraft with the goal of reducing space transportation costs and enabling the colonization of Mars.” He is also the CEO of Tesla, a car company that manufactures electric cars. One of its functions that make Tesla is very well-known is a featured called AutoPilot. He is known for the chairman of the Solar City which concentrates in solar energy services.  Currently, he is one of the most intelligent Engineers in the world because of his crazy ideas and mindsets.

All of his inventions are constantly changing the world. For example, Tesla is an environmentally friendly technology which it only required electricity in order to run the process. This means that Elon Musk wanted to end the use of gasoline because it has an immense effect in term of climate change. His private space company, SpaceX, is trying to find a livable planet for humans because he wanted to prevent the from overpopulated. Moreover, people don’t need to carry out their money to buy what they wish because people can use PayPal instead of the actual currency.

In the future, Elon plans to sent people to Mars by 2025 because he wants to colonize the planet and make it into a living place. He even wanted to create tunnels, a new future transportation system. To begin the project, Elon’s objective is to build a network of underground tunnels in LA that move cars on electric skates at the speed of 125 mph. In the next 20 years, cars will not have steering wheels, so they are able to go fully autonomous in the long-term. He even said that “Aircraft and ships and all other forms of transport will go fully electric. Not half electric, but fully electric.” I think these goals will be achievable for him since he is a crazy and intelligent inventor of the century.  

Elon Musk credits his success to three important steps. The first step is to focus on more than one field; when Musk was back in school, he majored in two areas: Art in Economics and Physics. Musk had been interested in space and rockets for so long that he spent a lot of his own time reading textbooks and consulted with experts about rocket science and engineer. “His ability to understand the details of space and SpaceX products helps to connect with staff and build better products.” Musk studies in many different fields; he is able to understand deeper principles, and applies the principles “ to their core specialty.” The second step, learn to transfer knowledge. When Musk was in school, he is known to read two books per day: science fiction, philosophy, religion, and programming. This allowed him to get exposed to a variety of subjects and principles. Third think different. Elon ambition was to introduce the world to new amazing technology that nobody has ever thought of before. For example, Musk and his space company, SpaceX, was able to create a self-landing rocket. This is the three steps that he took to become one of the most famous engineers in the world. In conclusion, I think he is the top ranking inventor of the century by introducing new inventions to the world.  

References:

https://www.biography.com/people/elon-musk-20837159

https://www.oakton.edu/students/8/iiliev5728/Final%20Progect/Elon_Musk_Biography.htm

https://www.investopedia.com/university/elon-musk-biography/elon-musk-success-story.asp

https://www.quora.com/What-has-Elon-Musk-achieved

https://www.investopedia.com/university/elon-musk-biography/elon-musk-early-life-and-education.asp

https://ecotechdaily.net/how-elon-musk-is-changing-the-world

SAT Practice

In our math class, my classmates and I are working really hard to get prepared for the SAT test in October. We are doing a multitude of practices and finding techniques that are able to help us with the preparation. As I mentioned in the previous post, all of the Academy students were taken a two weeks long PSAT boot camp; however, we are still improving on the sections that we are struggling with. For example, one of the topics that some of the students are currently struggling with is the percentage change. We find it difficult with the percentage change word problems since we need to understand clearly about the context so that we can implement the formula to solve for the solution. To solve for the percentage change questions, first, we need to take the New value to subtract it to the Initial value, divide everything by the initial value and multiply it by 100.  

Percentage change = (New value – Initial value)/(Initial Value) = X * 100              

PSAT Bootcamp

It was unusual to come back to school and started working on the PSAT Bootcamp. It was two weeks long, and we got to work with the two young professional tutors from the Princeton university—Amanda and Kim. I was so amazed by them because they taught us a multitude of strategies that we could implement into the real SAT test. I found out that reading was the most challenging part for me because it took too much time just to understand the meaning of the passage. Moreover, I will do the real SAT test in a few weeks; I’m so nervous and feared that I will not do a great job on the test, and I feel like the SAT test is a complex way of looking for university and scholarship.

Khmer MUN

It was my first time to wear professional apparels and participated in the first-ever Khmer Model United Nations (MUN). On the 23rd of May, all the senior students were dressed up professionally to get ready for the whole day event. Three weeks before the event started, we discussed and came up with two suitable topics:  feeding the world growing billions and air quality control and pollution. “The delegate of Mexico please come up to give your speech,” I was so anxious when the chair called out my country to give my introduction speech to other delegates.

 

My introduction speech:

ជាបឋម គណៈប្រតិភូនៃប្រទេសមុិចសីុកូ សូមគោរពទៅដល់ប្រធានអង្គប្រជុំ គណៈប្រតិភូ ​​អ្នកសម្របសម្រូលកម្មវិធី  និងភ្ញៀវកេត្តិយសទាំងអស់ដែលមានវត្តមាននៅក្នុងអង្គកិច្ចប្រជុំពិភិក្សាគំរូ នៃអង្គការសហប្រជាជាតិជាទីគោរព!អង្គវិទិកាទាំងមូលជាទីគោរព! គណៈប្រតិភូនៃប្រទេសមុិចសីុកូមានចិត្តសោមនស្សរីករាយឥតឧបមាដែលមានឪកាសចូលរួមក្នុងអង្គប្រជុំមួយនេះ។  គណៈប្រតិភូនៃប្រ

ទេសមុិចសីុកូបានសង្កេតឃើញ ហើយយល់ច្បាស់ថា បញ្ហាដែលទាក់ទងជាមួយ ការចិញ្ចឹមកំណើនប្រជាជនក្នុងពិភពលោកគឺមានសារៈសំខាន់ដែលអង្គប្រជុំទាំងមូលគួរតែដាក់ចិត្តដាក់កាយដើម្បីពិភិក្សាអំពីបញ្ហាខាងលើនេះ។  នាពេលបច្ចុប្បន្ន មនុស្សជាង 1 ពាន់លាននាក់រងគ្រោះដោយភាពអត់ឃ្លាន។

នេះមានន័យថា មនុស្សម្នាក់ក្នុងចំណោមមនុស្ស 6 នាក់នៅជុំវិញពិភពលោកមិនបានទទួលអាហារគ្រប់គ្រាន់ដើម្បីផ្គត់ផ្គង់ការរស់នៅ ក៏ដូចជាទទួលទានអាហារដែលគ្មានផាសុខភាព​។

នៅក្នុងឆ្នាំ២០១៨នេះតែម្តង មនុស្សចំនួនប្រមាណជាជាង 36 លាននាក់នឹងស្លាប់ដោយសារភាពអត់ឃ្លាន! ប៉ុន្តែអ្វីដែលមិនគួរឲជឿនោះគឺ ជិតពាក់កណ្ដាលនៃអាហារទាំងអស់ដែលបានផលិតនៅជុំវិញពិភពលោកត្រូវបានបាត់បង់ឬខ្ជះខ្ជាយ ដោយសារតែទង្វើររបស់យើងរាល់គ្នា។

ដូច្នេះ តើគណៈប្រតិភូនៅក្នុងអង្គប្រជុំទាំងអស់ គួរតែអង្គុយចាំសង្កេតមើលស្ថិតិនៃការស្លាប់របស់មនុស្សកើនឡើង ឬក៏យើងពួតដៃគ្នាដើម្បីដោះស្រាយបញ្ហានេះ ? សូមគណៈប្រតិភូទាំងអស់ពិចារណាអំពីបញ្ហាដ៏ធំសម្បើមមួយនេះ។

ជាចុងក្រោយ គណៈប្រតិភូនៃប្រទេសមុិចសីុកូនឹងបើកចិត្តបើកកាយអោយទូលំទូលាយក្នុងការពិភិក្សា និងស្វែងរកនូវដំណោះស្រាយផ្សេងៗដែលអាចជួយផ្តល់នូវសុខសន្ថិភាព សុវត្ថិភាព និងយុត្តិធម៌ទៅកាន់ពិភពលោកទាំងមូល។ សូមអរគុណ។

It was such a great experience for to me to be a part of this amazing event. Even though I was struggled throughout the day but I did learn a bunch of stuff about Khmer MUN especially Khmer vocabulary.       

RC-Airplane

For the past few months, I realized that I am so passionate in Aerospace Engineer. When I was a kid, I always wished to travel on the airplanes only because they can fly. Moreover, I got an opportunity and participated in a Vex Robotics competition in Thailand; we traveled by airplane. The flight was awesome, I saw beautiful clouds, tall mountains, and amazing landscapes. I have a bigger dream, and I wanted to become an Aerospace Engineer. I started to build my own simple RC airplane that will able to lift, turn, and land by itself. The components that I use to build the airplane are a 7.4V battery, step-down converter, jumper cables, DC motors, receiver, transmitter, landing-wheels, servo motors, propellers, and foam KT. Currently, I am trying to figure out how can I control the speed of the DC motors when the airplane is in the air. Even though it is completed, but I will try my best to find the solution that able to improve my RC-Airplane.