This warming is in addition to carbon dioxide's better-known effect as a heat-trapping greenhouse gas. For scientists trying to predict global climate change in the coming century, the study underscores the importance of including plants in their climate models.
It is a physical change. All phase changes are physical, not chemical. The chemical composition of water does not change when it changes from a liquid to a gas, or for that ma â¦ tter, to a solid.
Condensing steam is not a chemical reaction... But is a reaction to coming into contact with a body of a lower temperature... So it is an exothermic reaction, although the ter â¦ ms exothermic and endothermic reactions are commonly used for chemical and nuclear reactions.