Initial theories of transformation of materials were developed by Greek philosophers.
The rate of reaction depends on and is affected by factors like pressure, temperature, the concentration of reactants.Ĭhemical reactions such as combustion in fire, fermentation and the reduction of ores to metals were known since antiquity.
But a new product is formed from reactants. And they form a new bond and no atom is destroyed or created.
A reaction can take place between two atoms or ions or molecules.
Which is generally observed with physical changes like precipitation, heat production, color change etc.
In a chemical reaction, a chemical change must occur.
They are continuously happening in our general surroundings for example, rusting of iron, pottery, fermentation of wine and so on.
Chemical reactions play an integral role in different industries, customs and even in our daily life.
Compounds that interact to produce new compounds are called reactants whereas the newly formed compounds are called products.
A Chemical Reaction is a process that occurs when two or more molecules interact to form a new product(s).
What were these transformations and how were they controlled? These questions could only be answered when the transition from alchemy toĬhemistry as a quantitative and experimental science took place. However, the chemical basis of the reaction was not understood. Processes like fermentation, in which sugars are chemically converted into alcohol, have been known for centuries. Though chemical reactions have been occurring on Earth since the beginning of time, it wasn’t until the 18th century that the early chemists started to understand them. The process of converting one set of chemical substances (the reactants) to another set of substances (the products) is one known as a chemical reaction. The slow process of iron rusting in the presence of oxygen and water over a period of years, or the delicate way in which fruit ripens on a tree. Whether it be a fire raging across a forest. In nature, chemical reactions can be much less controlled than you’ll find in the lab, sometimes far messier, and they generally occur whether you want them to or not. Substances and energy changes that take place in our world every second of every day. In fact, the colossal number of transformations make for a dizzying, almost incompre hensible array of new While we sometimes associate chemical reactions with the sterile environment of the test tube and the laboratory – nothing could be further from the truth. Before beginning with chemical reactions, it is important to know about physical and chemical changes.Ĭhemical reactions happen absolutely everywhere. That have been known and used forĬhemical reactions abound in the geology of Earth, in the atmosphere and oceans, and in a vast array of complicated processes that occur in all living systems.Ĭhemical reactions are all around us, from the metabolism of food in our body to how the light we get from the sun is the results of chemical reactions. Chemical reactions are an integral part of technology, of culture, and indeed of life itself.īurning fuels, melting iron, making glass and pottery, brewing beer, and making wine and cheese are among many examples of activities incorporating chemical reactions. Substances are either chemical elements or compounds.Ī chemical reaction rearranges the constituent atoms of the reactants to create different substances as SummaryĬhemical reaction, a process in which one or more substances or reactants are converted to one or more different substances or products.
Representing the Direction of the Chemical Reactionĭefinition of Chemical Reaction A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance.