Oxygen cycle is a chemical or physical change
Answers
Answer:
chemical change
Explanation:
because renew of oxygen is done
Answer:
he oxygen cycle is the biogeochemical transitions of oxygen atoms between different oxidation states in ions, oxides, and molecules through redox reactions within and between the spheres/reservoirs of the planet Earth.[1] The word oxygen in the literature typically refers to the most common oxygen allotrope, elemental/diatomic oxygen (O2), as it is a common product or reactant of many biogeochemical redox reactions within the cycle.[2] Processes within the oxygen cycle are considered to be biological or geological and are evaluated as either a source (O2 production) or sink
Explanation:Water can also undergo a chemical change. Water
molecules can be broken down into hydrogen and
oxygen molecules by a chemical reaction called
electrolysis. When an electric current is passed through
liquid water (H2O), it changes the water into two
gases—hydrogen and oxygen. The molecules of water
break apart into individual atoms. These atoms then
recombine into hydrogen molecules (H2) and oxygen
molecules (O2). The original material (water) changes
into different substances through a chemical reaction.
Hydrogen and oxygen are used as rocket fuel for the
space shuttle. During liftoff, liquid hydrogen and liquid
oxygen are combined in a reaction that is the opposite of
electrolysis. This reaction produces water and a large
amount of energy that helps push the shuttle into orbit
hence oxygencycle is a chemical change