A chemical reaction is a reaction in which a substance is turned into another completely different substance
See "What is causing the depletion of the ozone layer?" in the "Related questions" section below.
You can tell a chemical reaction has occurred if there is a change in color, formation of a gas, production of heat or light, formation of a precipitate, or a change in properties of the substances involved. These are observable signs that a chemical change has taken place.
A car Rusting is a chemicall change as a the iron in the car is converted into a different substance: iron oxide.
Ammonium nitrate can be written as NH4NO3, representing its chemical composition containing one ammonium ion (NH4+) and one nitrate ion (NO3-).
Nrg 3 is not a legal chemicall it usually consisits of relitivly pure mpdv or mephe start of extremly small like less than finger nail small
A car Rusting is a chemicall change as a the iron in the car is converted into a different substance: iron oxide.
endothermic reaction
It would be a catabolic reaction or decomposition reaction.
Formation reaction.
The initial reaction is required to be subtracted from the final reaction to get the net reaction.
reversible reaction
Answer a.speed of the reaction. b.products of the reaction. c.pH of the reaction. d.temperature of the reaction