![]() This classification does not require knowledge or speculation concerning reaction paths or mechanisms. Catalysts do not change equilibria positions.Ĭhemical reactions are commonly written as equations:įirst, we identify four broad classes of reactions based solely on the structural change occurring in the reactant molecules. Catalysts are substances that accelerate the rate ( velocity ) of a chemical reaction without themselves being consumed or appearing as part of the reaction product. Reaction Conditions The environmental conditions, such as temperature, pressure, catalysts & solvent, under which a reaction progresses optimally.Product(s) The final form taken by the major reactant(s) of a reaction.The portion of a reagent that ends up being incorporated in the product may range from all to very little or none. It may be organic or inorganic small or large gas, liquid or solid. Reagent: A common partner of the reactant in many chemical reactions.In addition to the representative metals, some of the representative elements are metalloids. It can be noted that all seven of these elements can be found on the regular periodic. Boron, germanium, silicon, antimony, arsenic, tellurium and pollanium are the seven most widely recognized metalloids. Nonmetals are shown in green, metalloids in purple, and the transition metals and inner transition metals in blue. Metalloids can be defined as chemical elements whose physical and chemical properties fall in between the metal and non-metal categories. ![]() Most ( or all ) of the reactant molecule is normally incorporated as part of the product molecule. 1: The location of the representative metals is shown in the periodic table. The reactant is often ( but not always ) the larger and more complex molecule in the reacting system. The reactivity series of metals is a list of metals arranged in their order of reactivity from highest to lowest. Other compounds may also be involved, and common reactive partners ( reagents ) may be identified. Reactant or Substrate: The organic compound undergoing change in a chemical reaction.Chemical Reaction: A transformation resulting in a change of composition, constitution and/or configuration of a compound ( referred to as the reactant or substrate ).We begin by defining some basic terms that will be used frequently as this subject is elaborated. Now that we can recognize these actors ( compounds ), we turn to the roles they are inclined to play in the scientific drama staged by the multitude of chemical reactions that define organic chemistry. Organic chemistry encompasses a very large number of compounds (many millions), and our previous discussion and illustrations have focused on their structural characteristics.
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