Single replacement reactions: a piece of zinc is added to cadmium chlorate solution

How will the emission of an alpha particle affect the atomic number of an atom

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive

Why is the melting of ice a physical change ?