That is false. mass is converted into energy
Answer:
Stronium
Explanation:
It is a metal (and shows classic physical proerties). It also belongs to the second family, meaning it has two valence electrons.
It is called the atomic number. (In physics it can also be called the proton number)
I think its
<span>The Mechanical energy in a mechanical system is determined by adding the potential and kinetic energy together. </span>
Covalent bond a chemical bond formed by two electrons that are shared between two atoms
ionic bond<span> a chemical bond formed by the electrostatic attraction between ions</span>
metallic bond<span> a bond characteristic of metals in which mobile valence electrons are shared among positive nuclei in the metallic crystal</span>