| || ||The scientific name of common salt is sodium chloride. It is another compound. It is made up of the elements sodium and chlorine. We often add sodium chloride to our food during cooking. |
Sodium, by contrast, is a silvery solid that reacts violently with water. And chlorine is a green, poisonous gas. Clearly, when they join to form the compound sodium chloride, there is a fundamental change in the properties.
This is true of all compounds. They no longer have the properties of the elements that make them up. They have their own properties.