Which is not a redox reaction?*1 pointEvaporationCorrosionPhotosynthesisCombustion

The answer is Evaporation.

Here's why:

1. Redox reactions, short for reduction-oxidation reactions, involve the transfer of electrons from one molecule to another.

2. Corrosion, photosynthesis, and combustion are all examples of redox reactions.

   • Corrosion is a redox reaction because it involves the oxidation of metal, where the metal loses electrons.

   • Photosynthesis is a redox reaction because it involves the reduction of carbon dioxide into glucose, and the oxidation of water into oxygen.

   • Combustion is a redox reaction because it involves the oxidation of a fuel source, where the fuel loses electrons and oxygen gains electrons.

3. Evaporation, on the other hand, is a physical process, not a chemical reaction. It involves the change of state from liquid to gas due to heat, but there's no transfer of electrons, so it's not a redox reaction.