Which of these processes are chemical reactions? boiling an egg crushing spices vegetables rotting chopping vegetables dew forming

The right answers are: boiling an egg and vegetables rotting.

* When a compound is heated, a change of state occurs, usually from the solid to the liquid, or from the liquid to the gas.

The coagulation of the egg seems to be a paradoxical situation with regard to the phenomena of fusion and evaporation.

With the increase of the temperature, there is denaturation of the proteins, that is to say that the hydrogen bonds are broken. There is then a rearrangement of the tertiary structure of the proteins.

* In biology, decomposition (or rotting) is a process occurring in plant bodies from the moment they are deprived of life, degenerate under the action of biological factors completely changing their appearance and composition. The decomposition process involves a succession of microorganisms such as fungi and bacteria, most often anaerobic. In other words, it is the degradation of organic molecules by the action of microorganisms.

In plant pathology, decay follows a cryptogamic or bacterial plant disease. For example an attack of the microscopic fungus Botrytis cinerea on a wide range of crops: fruits, vegetables, ornamental plants and grapes.