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Some Important Chemical Reactions you should know (O level chemistry)

Some Important Chemical Reactions you should know (O level chemistry) Ionisation of elements Ionisation of Group 1 elements (alkaline metals) Atoms of Group 1 elements have 1 electron in the outer shell, so they ionise by losing 1 electron to form a positively charged ion of charge +1. This is oxidation because it involves loss …

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Electron Shells, Subshells and how they are filled (A level Chemistry)

Electron Shells, Subshells and how they are filled (A level Chemistry) Many chemistry students face problems on electron shells, subshells and how they are filled. However, the issue of filling shells and sub-shells is very straight forward except for some minor exceptions that we are going to highlight of course. For some students, the problem …

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What are valence electrons and their importance (A level Chemistry)

What are valence electrons (A level Chemistry) What are valence electrons? Welcome, and in this post we are going to be discussing about: what valency electrons are. how valency electrons determined the chemical properties of an atom. the relationship between the number of valence electrons of an element and its position on the periodic table. …

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How to solve quadratics by completing the square

How to solve quadratics by completing the square Completing the square is one of the most versatile technique in quadratic equations and expressions. By completing the square we can solve a quadratic function to find the: roots of the quadratic function turning points (maximum or minimum point) of the quadratic function Before we start solving …

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Organic Chemistry Questions and Answers (O level Chemistry)

Organic Chemistry Questions and Answers (O level Chemistry) Organic chemistry deals with the compounds of carbon, except for carbonates and carbon dioxide. The following is a list of organic chemistry questions and expected answers for O level chemistry students. The first question is about ethanol (from the alcohols functional group) and ethene (from the alkenes …

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