Physical changes. ( salt water )?

Question

Dissolving salt in water makes salt water, but it is considered a physical change. Did somebody mess up? Explain.

Answer 1

no. since there is no chemical change involved and it si only a physical phenomenon it is a physical change
you can easily get back the salt by evaporating the water

Answer 2

A physical change is when a change in a substance that does not change it's chemical properties. When salt is dissolved in water, the salt in the water does not lose its chemical properties. Wanna check? Leave a cup of salt water outside for a couple of hours. You will see that the salt will remain. If the salt had bonded with the water, the cup would have been empty.

Answer 3

The change is not a chemical change (reaction), merely the physical process of solubility. The physical probeties are altered, in many ways....

One physical change is density. Disolving salt will increase the density. Conductivity decreases as salt content increases. So by disoving NaCl into HOH you change certain physical properties of the end solution.

An example of a chemical reaction (change) would be Na + HOH just dont try that at home!!!

Answer 4

The properties of salt do not change when it melts in water. The salt has merely melted, but if the water evaporates, the salt will remain behind.

Answer 5

some one did mess up because putting salt in water is a chemical change, because it is no longer water, it's salt water

Answer 6

No the change is chemical. sodium chloride (salt) dissociates into sodium ions (charge = +1) and chlorine ions (charge = -1). It is easily reversible but nonetheless the change is chemical as structures are broken down and new ones adopted.