The Chemistry of Life. Basic Concepts

The Chemistry of Life. The nature of matter Atom: the basic whole of matter. The submoteic mites that figure out up atoms ar protons(+) , electrons(-) and neutrons (+/-). The protons and neutrons have nearly the kindred mass. The protons atomic number 18 positively heydayd particles (+) and neutrons carry no wake up at all. The electron is a negatively charged particle (-) . They are in constant motion in the dictate surrounding the nucleus. Elements and Isotopes. Element: is a pure burden that make up entirely of unrivalled type of atom. Compound: is a substance organize by the chemical combination of both or more agents 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 bonce bonds and covalent bonds. An ionic bond is formed when one or more electrons are transferred from one atom to other. These positively and negatively charged atoms are know as ions. covalent bond: formed when electrons are shared between atoms. A molecule is the smallest unit of most compounds. Van der Waals Forces: repulse tenderness that develops between oppositely charged regions of nearby molecules.

Properties of pee A water molecule is polar because there is a uneven distribution of electrons between the oxygen and atomic number 1 atoms. urine is one of the a few(prenominal) compounds found in a legato state everywhere most of the earths surface. equal other molecu les, water is neutral. The love between a ! hydrogen atom with a partial positive charge and another 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 attraction between molecules of the same substance. Adhesion: is an attraction between molecules of incompatible substances. Solutions and suspensions * A mixture is a secular composed of two or more...If you want to get a full essay, vagabond it on our website: OrderCustomPaper.com

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