What Does Solubility Mean in Chemistry?

What Does Solubility Mean in Chemistry?What does solubility mean in chemistry? If you are looking for a simple, easy to understand answer to this question, it's simple - it means how solids dissolve in liquids. This is the basis of all chemists' work - from the experiments to the charts and records that they write.It's important to think about solubility in terms of viscosity. Visible solid substances are either very thin or very thick when they pass through a liquid. It can be described as their 'apparent' thickness. Think of it as if you were measuring the space between two thin pancakes, one which is already baked and the other which is just being cooled off. The first one will fall into the second - so when passing through the latter one, the first one will seem thinner.Now, let's say we have a mixture of things, each of which is water, but with different properties: each has a density which is different to the other, and each one has its own viscosity. Each time a piece of the m ixture touches a piece of the solid, it will push its density towards the thinner one, which is then pulled back out by the thicker one - until the two get to a state of equilibrium, where they are evenly dispersed.This applies to all liquids: water for example. Any of the water molecules in the mixture are required to push their own density towards the denser one, which is in turn pulled back out, leaving the more dense part in contact with the less dense. Think of it like the way cars push towards each other - the more popular the car, the faster they move. The more the car is needed to push itself forward, the slower it goes, and if you add more speed, you need more force to push it forwards.Solubilityis also a very important concept in chemical bonding. One of the main principles behind chemistry is that molecules should form stable bonds between themselves. You can't achieve this when you use different types of atoms for the different elements, so you have to use the same type of atom for all - because otherwise, when one of the atoms is excited, it causes a change in the properties of the rest of the molecule, leading to undesirable behaviour.Another example of solubility in chemistry is the fact that polar molecules (those that are in a solution) can 'float' on top of a non-polar one, allowing the solution to have a high-viscosity. This means that the amount of energy required to stop the polar molecules is much less than that required to stop the non-polar ones. So, when you don't allow the solution to form the correct type of ice crystal, the solution becomes highly viscous. Imagine the amount of power that is required to turn a car, when it has no power - the problem with this is that the friction will wear out the car! And this is exactly what happens when you apply a non-polar solution to the polar ones.Solubility is a very important concept in chemistry - and many other fields as well. So, if you want to learn more about it, you can go to your loc al library or bookshop, and you'll probably find plenty of information and references.

Said or Told

Said or Told Do you know when to use  said and when to use  told? Some students find these words confusing. This article should clarify things for you. By Rebecca Kennison Rules and Examples RULE:  Say  cannot be followed by a direct personal object (for example,  me, him, her, us, them, John, Peter, Mary). Use  told  instead. INCORRECT: I  said  her to send me the document. CORRECT: I  told  her to send me the document. INCORRECT: The teacher  said  the class that hot air rises and cold air sinks. CORRECT: The teacher  told  the class that hot air rises and cold air sinks. RULE: Do not use  tell  with the preposition  to. Remove the preposition or rephrase your sentence with  say. INCORRECT: I  told to  her my phone number. CORRECT: I  told  her my phone number. CORRECT: I  said  my phone number. RULE: Do not use  it  after  tell  to refer to a fact. Remove the extra word. INCORRECT: Ill  tell you it  tomorrow. CORRECT: Ill  tell  you tomorrow. EXCEPTION: Ill tell you it gave me the strangest feeling I ever had.  Video Lesson on Said and Told Free Grammar Checkers Virtual Writing Tutor grammar checker website Grammarly plugin for Chrome Please follow and like us:

Importance of Early College Preparation

Importance of Early College Preparation College preparation  is extremely  important  to  college  success for students.  Although many decisions are made during the senior year, it is best to begin the college process as early  as high school freshman year. Knowing this, it’s crucial for freshman students to complete these tasks before the end of the school year: Answer the questions: How are you doing academically? How would you rate your current academic performance? If you feel as if you are struggling, now is the time to get some help from a tutor and make sure you will be able to pass your tests. If you are unprepared, you  can fail an assignment or class, which leads to stress and hopelessness. Get involved in a school activity.  Being a member of the chess club, art club, sports, etc.  is a great way to dive into your passions and interests outside the classroom. If you are having difficulty, talk to someone (teacher, tutor, or counsellor). Make a plan for next years courses.  Advanced classes should certainly be a part of this plan. Choose an inspiring community service project  such as collecting toys for a local shelter, planting a community garden etc. Make some preliminary college visits. Wander around, explore the campuses, talk to students. Find out what you like and dont like about the campuses.  It’s never too early to  visit colleges ??

World Teachers` Day 2015

World Teachers` Day 2015 World Teachers` Day is on October the 5th every year. It is a very special day. It celebrates some of the world`s most important and valuable to society people teachers. Today I want to thank all teachers for our greatest achievements. Because they teach us much more than just science, math, and language.  They teach us how to live, how to tell right from wrong, and show us the right way. Teachers might play different roles in our life: mother, nurse, mentor, tutor, guru. They are knowledgeable, patient, enthusiastic and kind. Good teacher can completely change our life. Teachers show us each day how to be kind to each other and to ourselves. Teachers motivate and inspire us, and give us strength to succeed in life. Teachers teach us idea that with hard work there is nothing impossible. They give us the chance of a better future. Teachers make the great contributions to education and the development of societies and nations. Teachers are true heroes! To show the power of the teachers, I want to quote Henry Brooks Adams: A teacher affects eternity; he can never tell where his influence stops. TutorZs team congratulates all the amazing tutors who work with us! Happy Teachers Day!

ESL Correct Usage Of The Article `the`

ESL Correct Usage Of The Article `the` Just like many of our students who find tutors on the TutorZ site, I am also an English as a second (ESL) language speaker. For ESL speakers like us, the correct usage of the definite article the can be somewhat hazy My ESL friend Anna Niko  is a Russian speaker. The Russian language uses no articles whatsoever. So for Anna, using articles has been particularity interesting. Thats why she taught   at TutorZ the following: The definite article the is the most frequent word in English. We use the definite article in front of a noun when we believe the listener knows exactly what we are referring to. For example: The president of the United States The moon is so big tonight. Further uses of the definite article if there is only one in that place or in those surroundings: Dad, can I borrow the car? We live next to the church. We also use the definite article when we say something about all the things referred to by a noun: The wolf is not really a dangerous animal. The kangaroo is found only in Australia. When we use countries the usage of the define article becomes tricky. The is dropped when we refer to Germany, Italy, and France, even though these countries are very unique, in fact the only one existing. We dont say the Germany, the Italy, the France. However, when talking about countries that consist of individual parts such as the US (United States), the UK (United Kingdom), the UAE (United Arabic Emirates) then the article the is kept. Note the correct usage of the definite article in The US vs. England The Russian Federation vs. Russia In a similar vain, the definite article is dropped before days of the week, parks, streets, mountains and lakes. For example, Ive been to Lake Ontario. However, unlike lakes, when referring to oceans, the definite article is kept. For example, we overflew the Atlantic Ocean. The picture below illustrates how the usage of the the depends on its context. In summary, use the definite article is used before singular and plural nouns when the noun is specific or particular. If in doubt, ask one of our 3000+ ESL tutors.

5 Reasons to Take Time Off Before a Postgraduate Degree

5 Reasons to Take Time Off Before a Postgraduate Degree Each and every year there are loads of graduates that apply to do a postgraduate to begin attendance in the following autumn. However, there are several reasons that you may want to take time off before making a decision. Ensuring you are making the right career choice By waiting a year or even two years before attending applying, will help you clarify your career path. You may choose to work in the field at an entry level position to see if this is something you truly want to spend the rest of your life doing. Gaining experience now for better learning later. There are many people out there that find it easier to learn in a class setting when they have real-life experience they can relate to or connect with. For instance, if you need to take epidemiology class for your degree, consider enrolling as a volunteer in the medical sector. You may end up in another country helping the people in the village comprehend basic health principles. This experience will make learning epidemiology topics easier. You will also gain knowledge that will provide you with insights that your classmates may not have. Improving your applications There are some degrees out there that only accept a small percentage of those who actually apply for admission. The admissions personnel will look at everything from your CV to personal and professional goals to grades to test scores to decide whether or not you are admitted. So, the more work history you have on your CV, the more realistic your professional and personal goals are and the better your grades and test scores are, you will have a better chance of being admitted. Improve your future job applications For a minute, pretend you are the hiring manager for your dream job. You have a pile of CV's and job applications in front of you on your desk. Half of these CV's have postgraduate degrees that are pretty impressive along with summer internships. The other half of the CV's provide detailed accounts of the applicants work history along with impressive skills that are relevant to the job and grad degrees that are impressive. It is pretty obvious that you are going to want to interview the latter group of candidates. Improving your outlook financially While it is true that postgraduate education may help you to increase your potential work earning, you can also improve your financial outlook before even deciding on a postgraduate degree. You can take a year or two and work so that you can pay down your student loan debt or you can begin to create a savings nest egg for your future.

How To Learn English - Vietnamese Language Learning

How To Learn English - Vietnamese Language LearningLearning Vietnamese is a fantastic way to learn how to speak and understand English. It is truly an amazing way to learn about the world. To some people, it can be a way to find adventure and a new world of possibilities and opportunities, but for many others, it will be their greatest learning experience.Vietnamese language lessons are available in almost all bookstores as well as online and the lessons are usually included with the materials. The children love the program because they are going to be able to learn English quickly. With only a short time investment, they will be able to master the language and be able to communicate with Vietnamese and the English speaking community.Most schools require that students have a proficiency in English in order to do well in school. Students who don't take these courses to learn the basics of English through their parents or relatives. With this, students feel confused when they try to co mmunicate with Vietnamese students or even with those who speak English. Those who have not taken these courses often feel bad because they think that they are failures.When you enroll in these courses, you will be allowed to speak with native speakers in both Vietnamese and English. This will allow you to learn both languages in a natural way. You won't feel embarrassed or awkward in speaking with the other side. You can ask for directions or ask how to do something and the people on the other side will probably be able to help you.There are several ways in which you can learn English. You can use a software program or a book to do this but in the end, it is still best to talk to the other person who speaks English.In addition to the books, you can also avail of a program that teaches you a great deal about the language. If you are interested in getting more information about learning Vietnamese, then you can go online and do research. There are a lot of programs available for thos e who want to take the program in order to learn English.By taking a course on how to speak English, you will learn everything about the language. This will provide you with a clear knowledge of the language so that you will be able to communicate in the Vietnamese language. As you learn the language, you will also understand it.