Metabolic Process notes These are just notes for

Chemical Basis of Life (1) Biology is the consume of living organisms. In turn, organisms atomic number 18 chemical substance machines, i.e. organisms argon quiet of molecules, which are collections of sm eitherer units called atoms. Therefore, we sign to consider the chemistry of sprightliness or biochemistry. Chemical Bonding -electrons occupy divers(a) positions (distances) from the heart and soul of an atom, known as power levels. -as an electron moves still from the karyon of an atom, its potential energy increases. wherefore? Energy is scuttlebutt to burn its everyday attraction to the positively lodged nucleus. -the outer(prenominal) orbital or energy levels are termed the valency orbital; the valency electrons ** the chemical behaviour of an atom is find by the itemize and constitution of the valence electrons. The need for stability - there are a group of elements in the occasional(a) fudge called the noble gases that are inert (non-reactive). Except for helium that has 2 valence electrons, all members of this group have 4 pairs or 8 valence electrons. Chemical Basis of Life (2) Therefore 8 seems to be a magic number i.e. the noble gases do non flack to gain, drop, or constituent electrons with another(prenominal) atoms. All other elements take in charge to gain, lose and share electrons to deliver the goods the ability of the noble gases. These interactions are the cause of chemical reactions that result establish the chemical sequesters among atoms.

Types of Bonds 1.Ionic - Atoms lose electrons to have positively supercharged ions called cations -atoms gain electrons to become negatively charged ions called anions. -an ionic bond forms between alloy cations and non-metal anions; it is scarcely electrostatic attraction involving contrary charges. e.g. table sodium chloride - NaCl - atomic number 11 has 1valence electron; if it loses this, it becomes stable, resulting as the cation Na+ -Chlorine has 7 valence electrons; the appendage of... If you want to get a full essay, come in it on our website: Ordercustompaper.com

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