If the frequency of a wave doubles, which of the following could be true? a. the pitch gets lower b. the pitch gets higher c. the pitch does not change d. the pitch becomes negative

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.

The biosphere of the earth is made up of what compound? organic or inorganic?

What happens to the concentration of hydronium ions as the ph of a solution increases? a. hydronium ion concentration stays the same b. hydronium ion concentration decreases c. hydronium ion concentration increases