It is a chemical breakup that is achieved through passing a direct electric current through a weak solution of salt in water. The energy used to achieve this is theoretically equal to the energy released when the same free hydrogen and oxygen recombine in an explosion.
No. It's a physical reaction.
No, separating sand from water is a physical process as the chemical identities of the sand and water remain the same.
Physical
Dissolving in water is a physical change.
physical
No, it is a physical process.
No. It's a physical reaction.
No, separating sand from water is a physical process as the chemical identities of the sand and water remain the same.
It would be chemical change.
The breaking up of water molecules by separating it into hydrogen and oxygen is an example of chemical change. This is because a chemical change is one where atoms and bonds rearrange to form new molecules.
Physical
Physical. (Its still water.)
Ocean water is a substance, not a physical or chemical change.
Water is not a reaction at all. If you mean to ask if a state change in water is chemical or physical, it is physical.
Physical
Boiling water is a physical change because it does not change the chemical composition of the water.
physical