Chemical changes<span> occur when a substance combines with another to form a new substance, called </span>chemical<span> synthesis or, alternatively, </span>chemical <span>decomposition into two or more different substances.
So which one do you think is the answer?</span>
The answer Is C.the layer of rock they're found in
When Sodium and Chlorine come together they transfer an electron.
- Source: google
Hopefully this was clear and you understood!