Theories in Chemistry

Theories in ChemistryThe theories in chemistry deals with some of the fundamental principles that govern the chemical behavior and properties of all elements. However, what these theories tell us is still more complex than many of the manifestations we see on the surfaces of materials.It is beyond the scope of this article to enumerate all the basic principles. Instead, we will just briefly talk about some of the more interesting theories. Let's start with some theoretical theories in chemistry. One of the most interesting ones is called the thermodynamic theory of gases.This theory describes the chemical reactions between water molecules and gases. You will find that the water molecule with a positive charge will have a stronger attraction to the positive electrode of the gas and that the chemical reaction will be facilitated. The reason why the gas molecules are bound to the negative electrode is because the water molecule has a negative charge.Another fascinating one is the ion ex change theory, which describes the chemical reactions of ions with ions. Again, it is due to the action of the electric charge of the ions.The theory of the covalent bond in the field of colloidal and ionic materials is another interesting one. This one is based on the fact that ionic liquids and solids hold their equilibrium at certain temperatures.This state is known as the equilibrium point and it occurs at a temperature higher than the melting point of the solid or liquid. As the temperature gets lower, the solids become saturated.These theories in chemistry are in fact very useful in solving problems of engineering and science. They can be used to identify different properties of solids and liquids. Theories in chemistry are really a good tool to solve problems in chemical engineering and the physics of the atomic system.

The Science of Roberto Carlos Impossible Free Kick

The Science of Roberto Carlos Impossible Free Kick If you are a football fan, youre probably aware of Roberto Carlos impossible  1997 agains France. He seemed to do something that defied the laws of physics, make the ball turn in the air around a group of players, and into the goal.If you are not familiar with it, you can watch it here.So how is this impossible kick possible? The animated TED video below explains the science that made it work in a very interesting way. Watch it and see if you can answer the questions.Answer the questions below in comments and we will respond.1. Just before going out of bounds, it ____ to __ ___ and ____ into the goal.2. What did the ball need to make it go into the goal, according to Newtons first law of motion?3. What made the ball curve? What is the name of the effect?4. What makes the kick so hard to do?5. How did Newton notice the Magnus effect?6. What would you have to do to make the ball spiral?7. Do you have a favorite moment in football history? Describe it.

2018 Official Guide to the GMAT Review Series Problem #167 (Back solving Variable in Choices)

2018 Official Guide to the GMAT Review Series Problem #167 (Back solving Variable in Choices) GMAT MBA Admissions Blog in this series, one of our most experienced GMAT tutors, John Easter, applies useful strategies to answer questions from the 2018 Official Guide. Problem #167 of the 2018 Official Guide to the GMAT states that four extra-large sandwiches of exactly the same size were ordered for m students where m4. Three of the sandwiches were evenly divided among the students. Since 4 students did not want any of the fourth sandwich, it was evenly divided among the remaining students. If Carol ate one piece from each of the four sandwiches, the amount of sandwich that she ate would be what fraction of a whole extra-large sandwich? (A) (m+4)/(m(m-4) (B) (2m-4)/(m(m-4)) (C) (4m-4)/(m(m-4)) (D) (4m-8)/(m(m-4)) (E) (4m-12)/(m(m-4)) It's a VIC (variables in choices), and there is only one variable, so, obviously, it's time to back-solve! STEP 1: Pick a nice value for m that is greater than 4. This is our pick. Anything should work, so let's say m = 6. STEP 2: Solve the problem when m = 6. The result is our target number. So, six students divided three sandwiches equally. That means each of these students got1/6 of each of three sandwiches. Now, because 4 students didn't want any of the last sandwich is was divided equally between the other 2 students, one of whom was Carol. So, Carol ate 1/6 of each of the three sandwiches that everyone shared and1/2 of the forth sandwich. Carol ate 1/6 + 1/6 + 1/6 + 1/2 sandwiches. That's 1 sandwich. So, our target number is 1. STEP 3: Plug our pick into the answer choices until we find our target number. A nice thing to notice is that all of our answers have the same denominator: m(m-4). If we plug 6 into that denominator we get 12. Since our target number is 1, we only need to find an answer with a numerator equal to 12. (A) 6 + 4 = 10. Nope (B) 2(6) - 4 = 8. Nope (C) 4(6) - 4 = 20. Nope (D) 4(6) - 8 = 16. Nope (E) 4(6) - 12 = 12. Yep The correct answer is E. An important caveat - this pick worked really well, but it's always possible that more than one answer will turn your pick into your target number. It's rare, but it can happen. If it does happen, don't panic. Pick a new number and try it on the answers that produced your target number. One of them will work and the others probably won't. If, by some chance, more than one answer still produces your target number, rinse and repeat. Now you try this problem with your own pick. About the Author John Easter is one of MyGuru’s longest tenured and most experienced GMAT tutors. He is also the founder of Owl Test Prep, another great source for GMAT advice.

8 Things to Do Before Bed to Make Your Mornings More Organzied!

8 Things to Do Before Bed to Make Your Mornings More Organzied! Avoid running out of the house to catch the bus with your shoes half tied and your homework falling out of your bag! What a nightmare! With these 10 easy habits, your mornings will be filled with Eggos and morning cartoons and you'll never be late to school again!1. Make sure your homework for the next day is on top and easy to find! You don't want to get a bad grade just because you forgot to put your assignment in your notebook!2. Take your old, graded assignments out of your binders. But don't throw them away! Keep them somewhere safe so you can find them when it's time for your year end tests!3. Pack your backpack, zip it up, and put it by the front door!4. Review your schedule for the next day. Do you have any important tests or quizzes? Soccer practice after school? Make sure you pack that calculator for your math test and your cleats for your game.5. Lay our your clothes before your go to bed. Find that stylish outfit and have it ready to go the next morning.6. Make your lunch ahead of time! Don't worry about the hassle of figuring it out the morning of. Pack it up the night before.7.Set your alarm! Don't forget the most important tool in getting to school on time. Give yourself a buffer in the morning so you don't always feel rushed.8. Last but certainly not least, get to bed at a reasonable hour! Set yourself a bedtime of 8 - 8:30 and have some time without iPads, Fortnite, and tweets to decompress and set yourself up for success.

6 Language Apps That Use Speech Recognition for Well-rounded Learning

6 Language Apps That Use Speech Recognition for Well-rounded Learning 6 Language Apps That Use Speech Recognition for Well-rounded Learning Its one of the biggest obstacles for language learners.Ive got all the right books tons of vocabulary flashcards Im signed up for an awesome online courseBut I cant find anyone to actually speak with!If youre learning a language solo and dont live near native speakers of your target language, youre probably sick of gabbing to yourself.Luckily, technology provides a solution.Thanks to increasingly advanced speech recognition software, there are apps that can give you instant feedback on your speaking and pronunciation skills.Here are the six best apps for language learners with speech recognition, so you can get talkin at any time! Why Use Speech Recognition for Language Learning?First of all, using speech recognition can help you fine-tune your pronunciation. When you practice speaking independently, it can be difficult to hear what youre doing wrong, so having an app that can pinpoint problems is a useful way to determine what you need to work on.Additionally, speech recognition i snt  intimidating. Since you arent working with a real person, you wont be embarrassed if you make a mistake. Practicing with an app can make you more confident in your skills and eventually take away some of the intimidation factor of talking with actual native speakers.Finally, speech recognition apps provide a  flexible study option. You can get speaking practice whenever you want, without needing to schedule time with your conversation partner.That means you can cram in a little extra speech practice whether youre waiting in line at the store, relaxing in bed or even in the shower (just make sure your phone is waterproof first).6 Language Apps That Use Speech Recognition for Well-rounded LearningIf youre anxious for this kind of speaking practice, youre the type of language learner who enjoys immersive learning (surrounding yourself with the real spoken and written language). FluentU is a great option for at-home immersion to round out the speaking skills that youll build with t he apps below.FluentU provides authentic foreign language videos, like movie trailers, music clips, inspiring talks and more, thatve been transformed into language learning experiences. Each video comes with interactive captionsâ€"click any word for an instant definition, native pronunciation and visual learning aid. Youll also get flashcards and exercises to help you remember what youve learned when youre done watching.All the videos are organized by genre and learning level, so its easy to find something that works for you. Its a fun way to actively build your vocabulary, grammar and comprehension skills while absorbing your target language the way native speakers really use it.Check out the full video library for free with a FluentU trial, and then test your speech on the new words you find there with the apps below!MondlyNeed some conversation practice? Mondly might be the supportive, non-judgmental conversation partner youre looking for.Mondlys main focus is on helping you lear n common words and phrases that you can use in real-world situations youre likely to encounter.After helping you remember key words and start putting together phrases, Mondly will put your speaking skills to the test with a simulated conversation. Youll hear a prompt spoken by a native speaker. The words and their translations will also appear on the screen. From there, youll have a list of options for replies you can actually say into your device.Mondlys speech recognition aims to improve your pronunciation by listening to your words and phrases and giving you feedback for correct, clear speaking.Mondly offers more than 30 languages, including common options like Arabic, Chinese, French, German, Italian, Japanese, Korean, Portuguese, Russian and Spanish. However, Mondly also offers less common options, like Afrikaans, Bulgarian, Croatian, Hungarian, Indonesian, Persian and more.BabbelIf you dont have much time but want to pack in a lot of language learning, you might want to try Ba bbel.Babbel aims to teach you a language in 10- to 15-minute daily lessons. It covers popular topics, like business, travel, shopping, dining and transportation, to ensure that the skills you learn are likely to be usable in the real world.Babbels speech recognition feature appears during vocabulary review. Youll see the written word and its English meaning and you can also play an audio pronunciation. From there, you have the option of speaking the word yourself. Your goal is to emulate the pronunciation you heard.If your pronunciation is good, youll get a new word. If not, you have four more chances before the app moves on regardless of your pronunciation.Babbel offers 14 languages, including Spanish, French, German, Russian, Italian and English.AudioNoteWhile AudioNote isnt designed for language learners, it could be your secret weapon for perfecting your pronunciation.AudioNotes main focus is (you guessed it) taking audio notes. This means that you speak into your device while t he app jots down what you said.For language learners, this provides a  quick way to see if your pronunciation is clear enough for the app to understand what youre saying. If the transcription isnt accurate, you may not be speaking clearly enough.One of the features thats perhaps most useful for language learners is the linking of  audio and text. You can play back the audio you spoke as the app highlights the transcription to show where youre at. This makes it easy to pinpoint which (if any) words you mispronounced. You can also tap your notes if you want to hear specific words you said.AudioNote is available in English, French, German, Italian and Spanish.BusuuGot an extra 10 minutes today? Busuu can help fill it with language learning goodness.Not only will Busuu provide you with grammar lessons, vocabulary practice and conversations with native speakers, but it can also help you improve your accent with speech recognition exercises.In these exercises, you hear a native speaker an d repeat after him/her. Then, the app will tell you if you pronounced the prompts correctly.Levels range from beginner to fluent.  Busuu offers 12 languages, including Arabic, Chinese, English, French, German, Italian, Japanese, Polish, Portuguese, Russian, Spanish and Turkish.Rocket LanguagesSure, Rocket Languages offers plenty of interactive materials to help you learn a language. Sure, its designed to be flexible so you can learn at your pace in whatever time you have available. But lets get to the juicy stuff: the speech recognition activities.Rocket Languages offers speech recognition for thousands of phrases. Youll be presented with a written word or phrase and its English translation. For languages that dont use the Latin alphabet, therell also be a transliteration listed to make things a little easier for you.Then, you can speak that word or phrase and the app will give you feedback on your pronunciation.Rocket Languages offers 12 foreign languages, including Spanish, Portug uese, French, Italian, German, Chinese, Korean, Russian, Arabic and Japanese.Rosetta Stone If youre into language apps and/or software, chances are youve heard of Rosetta Stone. Probably a lot. But dont stop reading just yet!Rosetta Stone has a lot to offer for language learners, so it should come as no surprise that their app offers some top-notch speech recognition. In fact, their speech recognition comes complete with its own registered trademark name: TruAccentâ„¢.It aims to help you perfect your accent by practicing common words and phrases and reading short stories aloud.This technology not only checks to make sure the words and phrases you used are correct, but it also compares your speech to that of a native speaker to provide you with an instant assessment of which words you pronounced well and which could use some more work.You can even compare the wavelengths of your audio to that of the native speaker, for super-precise adjustments. Plus, Rosetta Stone will track your pr ogress and let you  see how your pronunciation has improved over time.Rosetta Stone offers over 20 languages, including Chinese, Japanese, Korean, Portuguese, Arabic, Spanish, Italian, French and German.So speak up with these six apps with speech recognition! And One More ThingSpeaking is only one side of the conversation. Let FluentU sharpen your listening, reading and writing skills, too.  FluentU makes it possible to learn languages  from music videos, commercials, news and inspiring talks.With FluentU, you learn real languagesâ€"the same way that real people speak them. FluentU has a wide variety of videos, like movie trailers, funny commercials and web series, as you can see here:FluentU App Browse ScreenFluentU has interactive captions that let you tap on any word to see an image, definition, audio and useful examples. Now native language content is within reach with interactive transcripts.Didnt catch something? Go back and listen again. Missed a word? Hover over or tap on th e subtitles to instantly view definitions.FluentU Interactive TranscriptsYou can learn all the vocabulary in any video with FluentUs quiz mode. Swipe left or right to see  more examples for the word you’re learning.FluentU Has Quizzes for Every VideoAnd FluentU always keeps track of vocabulary that you’re learning. It uses that vocab to give you a 100% personalized experience by recommending videos and examples.

Home schooling regulations - Tutor Hunt Blog

Home schooling regulations Home schooling ? regulations may soon be tightened Home schooling ? regulations may soon be tightenedSchoolsHome schooling, or home education as it is actually termed in the UK, simply means a child receives all their education at home, either from tutors or (more likely) parents/carers. The choice to provide home education rests with the parents or guardians - no school can mandate that a child be educated at home, nor can the child themselves insist they do. The headteacher of the school does have the power to prevent a child being home educated, but this is a rare occurrence; the most likely scenario for a school refusing to cooperate is when the parents wish for their child to attend some classes at school, while receiving the majority of their education at home. Section 7 of The Education Act of 1996 lays down a number of clear points regarding the parent/carer`s legal responsibility should they choose to home school their child, along with some helpful guidelines: Parents are not required to be qualified teachers.While their child is not required to strictly adhere to the national curriculum, or take standardised tests, the parent/carers are required by law to ensure their child receives `full-time education suitable to their age, ability and aptitude and to any special educational needs your child may have.`Permission isn`t required from the school or education authority, but these institutions must be informed that the child will be homeschooled.Regular school hours, along with holidays and term times do not have to be adhered to.Fixed timetables are not needed, nor are formal lessons (which start at a certain time, and are of a certain duration) mandatory.There will be no funds provided for parents/carers who choose to provide home education for their child.The local EA (education authority) may be able to provide learning material and guidance throughout the year, and may also visit annually to check your child`s progress and offer advice. Before conducting research for this article I believed that obtaining permission for your child to be homeschooled was an extremely difficult process, and one that was very likely to be vetoed by your school or education authority. In fact any parent or carer can request that their child be homeschooled, and it is incredibly unlikely that permission will be refused. I also believed that home educated children were mandated to adhere to the national curriculum, and were likewise obliged to take the same exams as their school educated peers. This is apparently not the case - as the second bullet point above shows. One of the most common reasons for a child to be home educated is because of bullying at school. The only home educated child amongst my peer group had indeed been taken out of the school system because of excessive bullying, which teachers had done little to attenuate, much to the chagrin of his parents, who decided that he would learn more (and be safer) at home. Another demographic of home educated children are those with special needs: children with autism or ADHD may find they are not receiving the specific help they need at school, and their parents may decide that teaching them at home is the best option. Support for children with special needs has long been a problem, and it was announced by the government earlier this year that 215 million would be allocated to address this issue. The incidence of children with special needs being home educated is rising: over the last five years the numbers have grown by an astonishing 57% across England, Wales and Northern Ireland. In England the rise has been highest, with numbers up 64% compared to half a decade ago. A germane piece of news is that the government plans to impose stricter guidelines on home educated children. Only last week (24th November) school system minister Lord Agnew, speaking in the House of Lords, said that the Department for Education would be strengthening the guidance on local authorities and parents. The Department for Education has said this guidance will `help parents understand their responsibilities in delivering home education and make sure local authorities are clear on the action they can take`. This potentially drastic shake up of the home schooling system may have precipitated out of the Birmingham `trojan horse scandal.` Colin Diamond, head of education at Birmingham City Council, has expressed concern about children being isolated from their peer group: `The biggest risks in terms of exposure to any form of non-mainstream societal values is... if you are at home, because you are not part of the social group`. The government will soon be publishing a draft paper, outlining any changes to the home schooling system. It may include regular compulsory visits by education officials, and the insistence that children adhere to the national curriculum, and participate in the assessments and coursework, as they would if they were being educated at school. 2 years ago0Add a Comment

How to Prepare for Your Summer Internship

How to Prepare for Your Summer Internship pixabay.com Starting a summer internship? There are some things you should do to prepare yourself (and the company) for your presence over the next few months. Google search yourself It would be wise to see what lies in the search results. Your soon-to-be coworkers are bound to do it. Check your Facebook, too. You dont want anything wild showing up as your first impression, do you? Privacy settings are real and important. It would behoove you to check on that  before  you show up for your first day. Review the companys website Dont look like a doofus when you show up and know nothing about the companys online image. Itll be important for you to be familiar with  all  parts of the company. Trust me, read up on what the company stands for. Never say no Whether its making coffee or copies, your job as an intern is to learn  everything.  Walk into this internship knowing that you may have to do some things you dont exactly want to. But itll be important for you to show a strong work ethic and do it anyway. Prepare yourself to leave a positive, lasting impression on your employer and coworkers. Write some thank you notes Anyone who helped you land this internship deserves a hand-written note from you. Itll make you look good and respectable if you take some time to be sincerely appreciative. A little bit of work can go a long way. Prepare yourself for some major kissing up If theres any ounce of you that wants to turn this internship into a job afterward, prepare to do some major impressing. Towards the end of your internship, itll be important for you to express how interested you are in becoming a true part of the company. Make some good connections and anticipate staying in touch they might be your connectors to your dream job in the future. Make a bucket list Likely, there are things you want to learn or accomplish while at your internship. If you sit down beforehand and make a list of all these things, itll be much easier to assess how youre doing in the middle of the summer. Make a note on your calendar to review this bucket list. After all, you want to get the most out of your internship, dont you? Assess your wardrobe This is especially important for the first few weeks of the internship. Youre making an impression. Make sure youre showing up to work in something thats appropriate and respectable. Basketball shorts and a tank? No thank you. Connect with your mentor After all, thats what theyre there for, right? Ask them what you should expect and what you need to do/know walking into your first day.

Choosing an English Tutor

Choosing an English TutorThere are a wide variety of English Tutors available throughout the Richmond VA area. If you are looking for an English tutor and need to find the best one in the Richmond VA area, here are some suggestions that can help you. This will also help you determine which are the best ways to hire an English tutor to teach you English.It is important to know that it is possible to find an English tutor in Richmond VA. The best place to start your search is the Internet. Just type in 'English Tutor'English Tutors' and see what comes up. There are many options for finding a good English teacher.One of the best ways to find an English teacher is through student service programs. These student service organizations provide English tutors and ESL instructors to students. There are a lot of students, especially those in high school, that want to learn English but do not have the time or money to be able to go to a traditional school or even live close by. Many schools wil l have student service programs to help teach the language.Many people do not know how to write or speak English very well. Those who are going through a major transition in their lives may find this to be a big difficulty. For those that have experienced this it can be a difficult transition to deal with. If you have experienced this and feel you would benefit from an English teacher, it is important to check out Richmond VA and the Virginia-North Carolina state line.The city of Richmond VA is one of the fastest growing cities in the United States. As a result there are several colleges and universities in the area. Some of these schools, such as George Mason University, are located within a short drive of the Richmond VA area. Of course, the university in Virginia-North Carolina does not provide language training classes. Students that need to learn the language should look for classes at English institutes that offer language classes.English tutors are available in the area to he lp students with English. If you would like to learn the language yourself, Richmond VA is a great place to look. There are numerous private language schools that offer classes. These schools will usually provide accreditation so you know that the school has met some very high standards. This will make the process easier if you decide to attend the class.If you are an adult looking to learn the language, Richmond VA is an excellent place to start. The English community in Richmond VA is quite large and many people that can help you learn English.

What Is Dynamic Equilibrium in Chemistry?

What Is Dynamic Equilibrium in Chemistry?What is dynamic equilibrium in chemistry? This is the idea that the different elements, namely carbon, hydrogen, oxygen, nitrogen, and sulfur, undergo a chemical reaction and then come back together again to create different compounds. This concept may seem quite difficult to understand but it is actually quite simple.The first thing that you have to understand is that there are three types of reactions that take place in nature. The first type is the condensation of two substances. In this reaction, carbon dioxide freezes and forms water. The second type is the condensation of one substance onto another, for example, the combustion of a candle.Third, there are chemical reactions where a product and a contaminant are formed at the same time. For example, when you burn coal, you release carbon monoxide into the air. This contaminant is dangerous, as it can cause death in case of serious poisoning. However, if you ignite the flame from burning a candle, you will get only vapor and the oxygen will also be released into the air.The fourth type of chemical reactions is the chemical transformation. In this reaction, the newly created product is absorbed by the other products. For example, carbon dioxide combines with water, which can then be absorbed by the plants and animals living in the forests. The process is very simple, as it requires only the action of two or more elements.When we are talking about chemical equilibrium, we are not talking about the equilibrium of the atmosphere or the climate. That would be a relatively easy task. We are talking about equilibrium between molecules and atoms.In chemical equilibrium, the molecules and atoms have some relationship. For example, a molecule has electrons. If it has an electron, it is an ion, and if it does not have an electron, it is a neutral molecule. For example, carbon and oxygen, both have electrons.Equilibrium means that the proportions of the different elements or mol ecules stay the same during the process. So, it is quite a simple concept. There are several interesting facts about equilibrium. For example, it is the basis of most biological processes, because of its role in the metabolism of life.