Answer:
Zn + 2NaOH = Na2ZnO2 + H2
In chemistry and physics, the atomic number<span> of a chemical </span>element<span> (also </span>known<span> as its </span>proton number<span>) is </span>the number of protons<span> found in the nucleus of an </span>atom<span> of that </span>element<span>, and therefore identical to the charge </span>number<span> of the nucleus. It is conventionally represented by the symbol Z.</span>
Answer:
chemical change
Explanation:
Ash is formed as result of burning of paper which is a new product. Chemical change a new substance must form.
