"Substance" is too fuzzy a word. Chemical reactions can change materials into other compounds, for example shiny iron into rust (Fe2O3). But it cannot change an element into another element. A nuclear reaction can do that, for example uranium into plutonium.
A chemical reaction is a reaction in which a substance is turned into another completely different substance
Chemical reaction
Generally chemical energy can be defined as the aptitude of a substance to be transformed in another substance by a chemical reaction.
The conversion of one substance to another substance is a chemical change, which happens as a result of a chemical reaction.
This is a typical chemical reaction.
Chemical reaction
Chemical reaction
This could refer to a chemical transformation (chemical change), a chemical reaction, or spontaneous change. Some changes require another substance or substances to be mixed together. Some reactions will occur by themselves without any outside manipulation or stimulation.
This is called synthesis, a combination chemical reaction that changes the chemical bonds in the substances.
reaction Chemical change.
A synthesis reaction
synthesis reaction