What is the chemical equation?

The chemical equation is the representation of molecular interactions in their relative amounts. In the chemical reaction, the method of atoms is arranged to change each other. The internal structures of atoms are not affected, but energy, usually in the form of heat, is either released or absorbed during the chemical reaction. Chemical makeup of reactants or preliminary components is written on the left side of the chemical equation. On the right side are products or resulting compounds.

The chemical composition of the compound is represented by a chemical formula. The chemical formula shows how many atoms of each element are present in one molecule or stable atoms. For example, the water molecule has a chemical formula H _{2 o, because it has two hydrogen atoms and one oxygen atom. Chemical patterns of multiple molecules in the equation are separated plus symptoms.}

Although a large amount of matter can react, the chemical equation only deals with the ratios of the participating molecules. Reactants and products in a chemical reaction can only respond in a specificof the ratios. This is because atoms are not created or destroyed; Regardless of the atoms, they are present before the reactions must remain afterwards. For this reason, chemical equations should be balanced. The chemical equation shows a balanced reaction in the least possible amount.

It may be necessary to add coefficients to the left side of the chemical formulas to achieve a balanced equation. More than one of the specific molecule - even in the basic or smallest possible instance - is present in many reactions. If two atoms of the element are present, but are not in the same molecule, instead of the index, coefficient 2 is used. For example, 2 h _{2 are two water molecules or 4 hydrogen atoms and 2 oxygen.}

Field of studying measurable relationships between chemical reactants and products are called stoichiometry. It is useful in calculating the amount of product that can be created with a given number of reactants. In chemical reactionsIn the real world, it is generally impossible to obtain 100% of the reaction components to products. This is because the mass is separated in space and the reactants must be in contact with others to react.

Further registration in the chemical equation can reveal more information about the reaction. For example, if atoms or molecules have an electric charge, this number is registered in a supercrip with a plus or minus sign for a positive or negative charge. Other elements of the equation include the letters in parentheses, which are used to indicate whether the compound is fixed, liquid or gas. The symbols can also be placed among reactants and products to specify the reaction rate and whether energy is released or absorbed.