Signs of chemical reactions
Reactions that utilise chemicals involve the transformation of materials that are chemical in nature. The chemical substances that participate in these interactions are known as reactants while those substances generated are identified as the products. The process of transforming the reactants to products can lead to molecules integrated to one another to form bigger ones or molecules disintegrating to result to two or smaller ones (Bateman 12). A chemical change cannot be reversed.
The reactions involving chemical substances generate one or more products that normally have features different from the reactants and possess diverse physical and chemical properties. Chemical reactions can either be spontaneous, needing no input of energy, or non-spontaneous, and may require some form of energy, either as heat, light or electricity to start the reaction (Bateman 23). These changing of individual reagents into other compounds can be represented by use of equations that denote both the reacting elements and the resulting outcomes. During normal circumstances, the reacting materials are on the left side while the resulting products are usually on the right side of the equation.
There are several aspects that can indicate that a reaction involving chemicals have taken place. The first indicator is the formation of a cloudy solid product that settles in the vessel used to conduct the experiment (Bateman 20). A reaction that results to formation of the ionic solid, which cannot dissolve, occurs when negative ions and positive ions join together in a solution that is aqueous. For example, a solution of Silver Nitrate when taken and poured into a solution of Sodium Chloride, a chemical reaction process takes place forming a white solid of Silver Chloride (Bateman 27).
Likewise, when liquid potassium chromate (K2CrO4) is added to a solution of barium nitrate (Ba[NO3] 2, a solid of barium chromate (BaCrO4) will be formed. This reaction process also generates a solution, but our concern remains that the mixture of two solid substances has led to the generation of a solid in a solution that is different (Johnson et. al. 77). However, several factors have been found to determine the formation of the solid in a reaction process involving chemical such as temperature which may exert some influence as well as the concentration of the solution participating in the reaction process.
Utilizing diverse mechanisms like decanting and filtration can aid in removing the ionic solid from the mixture. The formation of solids in a reaction involving a variety of chemicals has been utilized in finding out if a particular element is present in a solution. Furthermore, it has been used to derive elements fo