Which statement correctly describes a chemical reaction?
Reactants come out of a reaction.

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

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