The Chemistry of Life. Basic Concepts

The Chemistry of Life. The nature of matter Atom: the basic social unit of matter. The sub blood corpuscleic mites that blade up atoms ar protons(+) , electrons(-) and neutrons (+/-). The protons and neutrons have near the kindred mass. The protons atomic number 18 positively heydayd segments (+) and neutrons carry no maintenance at all. The electron is a negatively charged particle (-) . They are in constant motion in the get surrounding the nucleus. Elements and Isotopes. Element: is a pure burden that make up entirely of unrivalled type of atom. Compound: is a substance make by the chemical substance combination of both or more constituents in definite proportions. Isotopes: atoms of the same element that differ in the number of electrons they contain. Chemical Bonds The atoms in compounds are held unitedly by various types of chemical bonds. The main types of chemical bonds are garret bonds and covalent bonds. An ionic bond is formed when one or more electrons are transferred from one atom to some other. These positively and negatively charged atoms are cognise as ions. covalent bond: formed when electrons are shared among atoms. A molecule is the smallest unit of most compounds. Van der Waals Forces: clarified tenderness that develops between oppositely charged regions of nearby molecules.

Properties of water A water molecule is polar because there is a uneven distribution of electrons between the oxygen and heat content atoms. water is one of the a few(prenominal) compounds found in a placid state everywhere most of the eart hs surface. comparable other molecules, wat! er is neutral. The love between a hydrogen atom with a partial positive charge and a nonher atom with a particular negative charge is known as a hydrogen bond. Hydrogen bond is not as plastered as covalent or ionic bond. Cohesion: is an draw between molecules of the same substance. Adhesion: is an attraction between molecules of incompatible substances. Solutions and suspensions * A mixture is a framework composed of two or more...If you want to get a full essay, vagabond it on our website: OrderCustomPaper.com

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