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It has been argued whether this is a chemical or physical change. It can be viewed as a chemical change since the Na ion and Cl ion are separated from the crystal lattice, and then become hydrated by water molecules, thus changing the actual chemical structure. However, this is a REVERSIBLE chemical change. Thus, if you evaporate the water, you end up with the same crystalline structure (lattice) that you began with, and so it may now be viewed as simply a physical change. There is no consensus as to which is correct, IMHO.
What else can I help you with?
Is reactivity with water a physical or chemical change?
This is a physical change. The bubbles are pockets of steam which is the same chemical as water, just in a different state.
Is dissolution of hcl in water a physical change?
Dissolution of HCl in water is considered a physical change because the chemical composition of the substances remains the same. The HCl molecules dissociate into H+ and Cl- ions in the water without any new substances being formed.
When table salt is added to water the ionic compound dissolves. Does this represent a physical change or a chemical change?
Dissolving table salt in water represents a physical change, not a chemical change. The salt molecules remain intact and simply disperse in the water, without any chemical bonds being broken or formed.
Dissolving salt into water is it physical or chemical change?
This is a physical change. You can separate the salt and water by the physical process of distillation or evaporation where the water is boiled away and the salt is left behind.
if sodium chloride dissolves in water what is it a chemical or physical change?
The dissolution of sodium chloride in water is considered a physical change because no new substances are formed - the sodium chloride remains as sodium and chloride ions in the water solution.
Is suger in hot water is it a chemical or physical change?
Dissolution is a physical change.
Dissolution of hydrogen chloride gas in water is a physical change or chemical change?
It is a chemical change ....
Oxygen and nitrogen in water it a chemical or a physical?
Dissolution of gases in water is a physical change.
Does ammonium chloride and water is a chemical or a physical change?
Dissolution is a chemical process.
When salt dissolves in water its a physical of chemical change?
Dissolution is a physical process.
If sugar dissolves in water is that a physical or chemical change?
Dissolution is a physical process.
Why should copper sulfate dissolution be regarded as a chemical change?
Dissolution of Copper sulphate in water is a Physical Change... It cannot be regarded as a Chemical Change.
If a substance is insoluble to water is it a chemical change?
Dissolution is a physical process.
Is dissolution of common salt is chemical or physical change?
It is a physical process; on the other hand dissociation in water is a chemical process.
Is aka-Seltzer dissolving in water a physical or chemical change?
It is not only a dissolution but also a chemical reaction; consequently a chemical change.
Why is salt water considered a physical change?
Dissolution is a physical change because the chemical nature of salt remain unchanged..
Why would the dissolution of salt in water be considered in a gray area between chemical and physical change?
Dissolution doesn't involve the chemical transformation of the salt.
