2 in front of the oxygen gas and the 2 in front of the water vapor are called the reaction coefficients.
A chemical reaction equation gives the reactants and products, and a balanced chemical reaction equation shows the mole relationships of reactants and products. Often, the amount of energy involved in the reaction is given. Dealing with the quantitative aspect of chemical reactions is called reaction stoichiometry. The substances undergoing changes are called reactants, whereas substances newly formed are called products. Physical appearances of products are often different from reactants. Chemical reactions are often accompanied by the appearance of gas, fire, precipitate, color, light, sound, or odor. A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.  The general concept of a chemical reaction has been extended to reactions between entities smaller than atoms, including nuclear reactions, radioactive decays, and reactions between elementary particles as described by quantum field theory. Chemical equations are used to graphically illustrate chemical reactions. They consist of chemical or structural formulas of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction; the arrow is read as the word yields. Reactants are the elements or compounds that initiate a reaction whereas products are the elements or compounds formed from reaction. However, some reactions are reversible an … d the reactants can become products and visa versa. This is most common in equilibrium instances with buffer solutions. In a chemical reaction, the reactants are the elements or molecules involved in producing a reaction. The products are the final outcomes of the chemical reaction. Example …. 2 people found this useful. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation. Chemical equations are used to graphically illustrate chemical reactions. They consist of chemical or structural formulas of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction; the arrow is read as the word yields. Products. Products are the new substances formed after a reaction. They are formed by the reaction between reactants, and they have different characteristics than reactants. Products may have a lower energy or higher energy than the reactants. Amount of product produced after a reaction is determined by the amount of reactants used, reaction time, rate, etc. Reactants vs Products. A reaction is a process of converting a set of substances into another set of substances. The substances at the beginning are known as reactants, and the substances after the reaction are known as products. The substance (or substances) initially involved in a chemical reaction are called reactants or reagents. Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants. Chemical equations are used to graphically illustrate chemical reactions. They consist of chemical or structural formulas of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction; the arrow is read as the word yields. Reactants and Products in Chemical Reactions. Reactants→Products. In a chemical reaction, substances (elements and/or compounds) called reactants are changed into other substances (compounds and/or elements) called products. The 2 in front of the oxygen gas and the 2 in front of the water vapor are called the reaction coefficients. They indicate the number of each chemical species that reacts or is formed. Methane and oxygen (oxygen is a diatomic — two-atom — element) are the reactants, while carbon dioxide and water are the products. All the reactants and products are gases (indicated by the g’s in parentheses)
http://www.science.uwaterloo.ca/~cchieh/cact/c120/reaction.html http://www.ric.edu/faculty/ptiskus/Chem_Review/ https://en.wikipedia.org/wiki/Chemical_reaction http://www.answers.com/Q/How_are_reactant_products_and_chemical_reactions_related https://en.wikipedia.org/wiki/Chemical_reaction http://www.differencebetween.com/difference-between-reactants-and-vs-products/ https://en.wikipedia.org/wiki/Chemical_reaction http://www.dummies.com/how-to/content/reactants-and-products-in-chemical-reactions.html
what are reactants and products in relation to chemical reactions