u asking me for my answer and u can not give me one
It's physical
The dissolution of sodium chloride is considered as a physical process.
It is a physical change as
Sublimation is a physical change.
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
chemical change
Melting is a physical process; reaction with sodium is a chemical process.
It's physical
chemical change a physical change changes the apperance chemicals changes change the substance
That is a chemical change. You are seeing a chemical reaction, where the sodium reacts with the water, forming sodium hydroxide and hydrogen gas.
Sodium is a chemical element, not a change.
No this is a chemical change- sodium reacts with chlorine gas to form sodium chloride and a lot of heat.
It is a chemical reaction for not only has the state changed of NaOH, but the identity of the substances have also changed.NaOH + H2O --> Na+ + OH-The "H2O" is not a reactant. It's actually supposed to go over the arrow. Sorry.Nonetheless, the dissolution of NaOH will increase the Hydroxide concentration, thus making it more basic. It will not change the identity of H2O.
The melting of Sodium is a physical change.
chemical
chemical
The dissolution of sodium chloride is considered as a physical process.