Answer:
A synthetic element is one of 24 chemical elements that do not occur naturally on Earth: they have been created by human manipulation of fundamental particles in a nuclear reactor, a particle accelerator, or the explosion of an atomic bomb; thus, they are called "synthetic", "artificial", or "man-made".
Explanation: hope that helps
Answer:
The answer is Elastic Potential Energy
Na is the symbol for sodium.
5 atoms is in 2CaCO3
Element: 1 atom
Compounds: 2+ atoms
