Prosperities of Teaching Career from Writer-Elite.com

Prosperities of Teaching Career from Benefits of Being a Teacher There are numerous reasons why people want to work in the sphere of teaching. For some of them, it is not merely a profession but a lifelong mission. Becoming a teacher can be hard as a person needs not only to know the subject inside out but also to be good at communication with people (especially of different age groups). I bet that all of us must have had a teacher who was a special one not like all the others and inspirational in his/ her own way. Very often such special teachers that we have met in high school or college are a kind of inspiration why we choose teaching career for ourselves. This career will never be boring because each day is totally different from the previous ones. Luckily, you are not involved in some tedious manual work and as a teacher you always communicate with different people and have various things to discuss. Every day you answer the questions of your curious and investigative students and you just cant help wondering how clever they are. Moreover, while teaching (even if you are involved in teaching in some nursery or primary school) you discover a lot of new things for yourself. You actually find yourself in the lifelong process of constant learning. What can be better than always having an opportunity to broaden your outlook? Finally, if you really love teaching, what can be better than having a profession that you truly enjoy and derive sheer satisfaction from? By doing what you love, you can help children broaden new horizons and open new doors in front of them. Check out a brief list of perks that teaching has: Teachers know the answers and they are the ones who share knowledge. Isnt it great when people come to you for any advice? Or when they view you as a reliable and trustworthy person with whom they can consult? Teachers have loooong vacations. Wow! Thats really the biggest perk of being a teacher. You dont have to work in summer! Teachers are always in demand. It seems that this profession will be always topical and even if you do not have an official job position, for now, you can always be a private tutor. You can be the one who inspires now. Remember all those great and enthusiastic teachers who inspired you in childhood? You can be the one like that right now. With your passion and enthusiasm, you can inspire your students to strive for the best and to find their niche in life. As a rule, teachers spend fewer working hours than their counterparts. Of course, they have to prepare some materials at home, but all in all its not the same as working in an office. Teaching will help you to become a real expert in your subject field. Even if you start as an inexperienced teacher. At least one year of daily teaching experience with all those explanations of the material will help you know the subject inside out. If you have children, your schedule will allow you to spend more time with them at home (as you wont be teaching late hours). The fact that you love what you do will always keep you motivated at work. You will enjoy such perks as pension plans and health insurance + tuition reimbursements and paid sick leaves. Teachers enjoy a solid paycheck. Besides, they have opportunities of being promoted and receiving salaries higher than average.

Valence Shell Electron Pair Repulsion (VSEPR)

Valence Shell Electron Pair Repulsion (VSEPR) Valence Shell Electron Pair Repulsion Theory (VSEPR) is a molecular model to predict the geometry of the atoms making up a molecule where the electrostatic forces between a molecules valence electrons are minimized around a central atom. The theory is also known as Gillespie–Nyholm theory, after the two scientists who developed it). According to Gillespie, the Pauli Exclusion Principle is more important in determining molecular geometry than the effect of electrostatic repulsion. According to VSEPR theory, the methane (CH4) molecule is a tetrahedron because the hydrogen bonds repel each other and evenly distribute themselves around the central carbon atom. Using VSEPR To Predict Geometry of Molecules You cant use a molecular structure to predict the geometry of a molecule, although you can use the Lewis structure. This is the basis for VSEPR theory. The valence electron pairs naturally arrange so that they will be as far apart from each other as possible. This minimizes their electrostatic repulsion. Take, for example, BeF2. If you view the Lewis structure for this molecule, you see each fluorine atom is surrounded by valence electron pairs, except for the one electron each fluorine atom has that is bonded to the central beryllium atom. The fluorine valence electrons pull as far apart as possible or 180Â °, giving this compound a linear shape. If you add another fluorine atom to make BeF3, the furthest the valence electron pairs can get from each other is 120Â °, which forms a trigonal planar shape. Double and Triple Bonds in VSEPR Theory Molecular geometry is determined by possible locations of an electron in a valence shell, not by how many how many pairs of valence electrons are present. To see how the model works for a molecule with double bonds, consider carbon dioxide, CO2. While carbon has four pairs of bonding electrons, there are only two places electrons can be found in this molecule (in each of the double bonds with oxygen). Repulsion between the electrons is least when the double bonds are on opposite sides of the carbon atom. This forms a linear molecule that has a 180Â ° bond angle. For another example, consider the carbonate ion, CO32-. As with carbon dioxide, there are four pairs of valence electrons around the central carbon atom. Two pairs are in single bonds with oxygen atoms, while two pairs are part of a double bond with an oxygen atom. This means there are three locations for electrons. Repulsion between electrons is minimized when the oxygen atoms form an equilateral triangle around the carbon atom. Therefore, VSEPR theory predicts the carbonate ion will take a trigonal planar shape, with a 120Â ° bond angle. Exceptions to VSEPR Theory Valence Shell Electron Pair Repulsion theory does not always predict the correct geometry of molecules. Examples of exceptions include: transition metal molecules (e.g., CrO3 is trigonal bipyramidal, TiCl4 is tetrahedral)odd-electron molecules (CH3 is planar rather than trigonal pyramidal)some AX2E0 molecules (e.g., CaF2 has a bond angle of 145Â °)some AX2E2 molecules (e.g., Li2O is linear rather than bent)some AX6E1 molecules (e.g., XeF6 is octahedral rather than pentagonal pyramidal)some AX8E1 molecules Source R.J. Gillespie (2008), Coordination Chemistry Reviews vol. 252, pp. 1315-1327, Fifty years of the VSEPR model