what is the difference between a chemical reaction ans physical separation.
In a chemical reaction electrons from one atom are exchanged or shared with another.
A chemical reaction and physical separation are two fundamentally different processes.
A chemical reaction involves the transformation of one or more substances into different substances with new properties. During a chemical reaction, the atoms of the reactants rearrange their bonds to form new compounds. This rearrangement occurs at the molecular or atomic level, resulting in the creation of entirely new substances. Some examples of chemical reactions include the rusting of iron, the combustion of fuel, and the reaction between an acid and a base to form water and salt.
On the other hand, physical separation refers to the process of separating a mixture into its individual components without any chemical changes occurring. Physical separation methods are based on differences in physical properties such as particle size, density, magnetic properties, boiling point, solubility, etc. These methods do not involve any molecular or atomic rearrangement. Instead, they rely on physical forces to separate the mixture into different parts.
Physical separation techniques include filtration, distillation, evaporation, centrifugation, magnetism, and chromatography. These techniques are used to separate mixtures into their components, such as separating sand and water, separating alcohol from a mixture, or separating different colors in a dye. In physical separation, the substances that are separated retain their original chemical properties.
In summary, the main difference between a chemical reaction and physical separation is that a chemical reaction involves the formation of new substances through the rearrangement of atoms or molecules, while physical separation involves separating mixtures into their individual components based on their physical properties without any chemical changes occurring.