The Chemistry of Life. Basic Concepts

The Chemistry of Life. The nature of matter Atom: the basic unit of measurement of matter. The sub atomic mites that crystallise up atoms ar protons(+) , electrons(-) and neutrons (+/-). The protons and neutrons have almost the kindred mass. The protons be positively heydayd subatomic particles (+) and neutrons carry no prosecute at all. The electron is a negatively charged particle (-) . They are in constant motion in the lead 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 some(prenominal) or more components 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 dome bonds and covalent bonds. An ionic bond is formed when one or more electrons are transferred from one atom to a nonher(prenominal). These positively and negatively charged atoms are know as ions. covalent bond: formed when electrons are shared mingled with atoms. A molecule is the smallest unit of most compounds. Van der Waals Forces: unconvincing tenderness that develops between oppositely charged regions of nearby molecules. Properties of water supply A water molecule is polar because there is a uneven distribution of electrons between the oxygen and hydrogen atoms. pissing is one of the a few(prenominal) compounds found in a eloquent state everywhere most of the earths surface. equal other molecules, 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 attachment between molecules of the same substance. Adhesion: i s an attraction between molecules of incomp! atible substances. Solutions and suspensions * A mixture is a sensible composed of two or more...If you want to get a full essay, vagabond it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper