Because the molecule of NaOH can be recovered unchanged from the solution.
Yes, dissolving sodium hydroxide in water is a physical change.
physical
No, dissolving is a physical change
it is just aphysical change..
It is a physical change. The sodium hydroxide dissolves, but it is still sodium hydroxide.
Yes
Yes. Dissolving is a physical change because it does not change the chemical composition of either the solute or the solvent.
The dissolution of sodium chloride is considered as a physical process.
Sodium Hydroxide is commonly used in cleaning agents in dish liquid soap, and as a drain un-clogger, as it is strong with dissolving things.
It is a chemical change because of sodium and hydrogen bonds forming
Dissolving salt in water is an example of a physical change. Although the ions of sodium and chlorine separate when the salt dissolves, no chemical reaction takes place.
This is a physical process, but sodium and chloride ions ar formed.