SCIENCE ONUOHA

OXIDATION NUMBER Oxidation number is the number of charge on a charged element Ca2+,Na+ (usually called ion) or a group of charged elements called radical e.g. SO42- , NO3-   e.t.c. The oxidation number can be calculated by following simple rules. The number of charge on the radical is the overall charge of the ion. Hence we can say Ca2+ has a charge of +2, while Na+ is +1, while SO42- , has a charge of -2. When an atom or group of atoms has no charge, it has an overall charge of zero. NOTE: Unless otherwise stated, the oxidation number of oxygen is -2. While most group 1,2, and 3 metals like Na, K, and Ca usually retain their natural value based on their group.  Some with multiple oxidation numbers have their charges written in Roman numerals after their names. CO2 - Carbon (IV)oxide H2SO4- Hydrogentetraoxosulphate(IV) NaNO3- Sodium trioxonitrate(V) When the element is positively charged, the suffix is pronounce - ate at the end of the  e.g. carbonate, sulphate however w...

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Writing is an art of putting down ideas in symbols or alphabets as a means of sending a message . Writing is one of the four means by which we communicate; others are speaking, listening and reading. Most of what is known in our world today was simply made available to us by those who chose to record them in writings. Look at all the Holy books, history and important records of event, they have been made available to us by writing and record keeping. And writing can be a skill of advantage to anyone who can benefits fully from it.  Listed below are some points to emphasis the power of writing 1. Record keeping: When you write you make records available, these records ensures that you don’t lose vital information. This is why minute are taken in meetings, in order to give one a flash back of events. It is also similar to when a student take notes in class, or jots down important points during a lecture. 2. Vision: Writing when used in planning is a powerful aid in working towards a...

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OXIDATION AND REDUCTION REACTIONS. Oxidation and reduction is an important topic for understanding chemistry. It serves as the foundation for building knowledge on  the behavior of metals, nonmetals,organic chemistry and general periodic table characteristics. The definition of oxidation and reduction has different meanings based on different terms. The following terms for the definition of reduction and oxidation includes the following 1.        Addition of oxygen 2.        Removal of hydrogen 3.        Addition of electronegative element 4.        Addition and Removal of electrons ADDITION  OF OXYGEN The addition of oxygen to a substance is known as oxidation. Because oxygen is one of the earlier know reactive elements. So when it combine with substances, the substances were said to be oxidized because oxygen was added to it. Consequently,...

QUANTUM CHEMISTRY Quantum chemistry is a branch of chemistry whose primary focus is the application of quantum mechanics in physical models and experiments of chemical systems. It is also called molecular quantum mechanics, Wikipedia . But let’s break it down a little bit. The first word is quantum Quantum is the Latin word for amount . This could mean amount of energy or amount of a substance or a given measurable quantity in the field of science. Take for instance when we say a dozen- it means 12, a score means 20. The next word is mechanics Mechanics is the science of a body’s movement when they have been subject to a of force. In this case the it is the part of science that studies of electrons surrounding the nucleus of the atom. Quantum chemistry looks at electron's position in orbits, and how it relates to their corresponding energy levels within the parent atom.             Simple atom  ...