Chemical reactions and equations-till changes

Chemical reaction

A chemical reaction is a process in which two substances undergo a chemical change and form a new substance or substances along with evoluti

Chemical equation

A chemical equation is a short hand representation of a chemical reaction where the number of molecules and atom of the reactants and products are stated in the forms of symbols and

Balanced chemical equation

A chemical equation is said to be balanced where the number of atoms of each element on the reaction side is equal to the number of atoms of the corresponding element on the products side.

Skeletal equation

An unbalanced chemical reaction where the number of atoms of each element on the react and side is not equal to the number of atoms of the corresponding element on the product side

Physical change and its identification

A change in which the physical properties of a substance change but the chemical composition does not change

Identity of the substance is maintained any changes generally temporary he change may or may not take place and only a few physical properties might or might not change

Chemical change and its identification

Change in which two or more substances make a new substance with different chemical composition

The Identity of the substance is completely lost it is usually a permanent change it is usually accompanied by the evolution of energy in the form of heat or light and it is usually not very easily reversible