What is Chemical equation?
A '''chemical [[equation]]''' is a way to [[predict]] the way that two or more [[chemical]]s will work together. Using what [[chemist]]s know about the way chemicals act, we add the letter [[symbol]]s together just like a math problem. In this way we can correctly guess if we will get a new chemical when we mix two or more chemicals together, and what that chemical will be. Chemical equations are either worded or written using the elements' symbols, how much of the [[chemical element|element]] and in what state ([[solid]][s], [[liquid]][l], [[gas]][g]) it is in. For example: An [[aqueous solution]] of [[sodium chloride]] (NaCl[aq]) and another aqueous solution of [[silver nitrate]] (AgNO<sub>3</sub>[aq]). These mixed together form [[sodium nitrate]] (NaNO<sub>3</sub>[aq]) and [[silver chloride]] (AgCl[s]) Which in symbols is: NaCl(aq) + AgNO<sub>3</sub>(aq) → NaNO<sub>3</sub>(aq) + AgCl(s) The solutions formed the solid AgCl. This formation can be called a [[Chemical precipitation|precipitate]] and the reaction between the two solutions a [[precipitation reaction]], because the solid produced is not dissolved, whereas all the other products are dissolved. == More about chemical equations == Chemical equations need to be balanced to satisfy the law of conservation of matter. Chemical equations tell that in a closed system matter is neither created nor destroyed. The chemical equation needs to be balanced so that it follows the law of [[conservation of mass]].<ref>{{Cite web|url=https://www.wyzant.com/resources/lessons/science/chemistry/chemical_equations|title=balancing Chemical equation|first=|last=|website=|publisher=|accessdate=May 25, 2016|archive-date=2015-11-23|archive-url=https://web.archive.org/web/20151123055009/https://www.wyzant.com/resources/lessons/science/chemistry/chemical_equations|url-status=dead}}</ref> A balanced chemical equation happens when the number of the different atoms of elements on the reactants side is equal to that of the products side. Balancing chemical equations is a proces