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WRITING CHEMICAL EQUATIONS

WRITING CHEMICAL EQUATIONS . 2019, 2004, 2002, 1989 by David A. Katz. All rights reserved. Permission for classroom used provided original copyright is included. David A. Katz Chemist, Educator, Science Communicator, and Consultant I. THE MEANING OF A CHEMICAL EQUATION. A CHEMICAL equation is a chemist's shorthand expression for describing a CHEMICAL change. As an example, consider what takes place when iron rusts. The equation for this change is: Fe + O2 Fe2O3. In this expression, the symbols and formulas of the reacting substances, called the reactants, are written on the left side of the arrow and the products of the reaction are written on the right side.

The rules governing the solubility of common salts are given below: THE SOLUBILITY RULES 1. All sodium, potassium, and ammonium salts are soluble in water. 2. The nitrates, chlorates, and acetates of all metals are soluble in water. Silver acetate is sparingly soluble. 3. The chlorides, bromides, and iodides of all metals except lead, silver ...

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