Answer:
A medium.
<h3>Explanation:</h3>
It's the material the wave is travelling through.
Answer:
For example, when silver nitrate and potassium bromide are mixed, a precipitate of silver bromide forms. The ions that remain in solution are written together as an aqueous, ionic compound on the products side. ... These ions, which do not form a precipitate, are called spectator ions.
<span>The atomic number tells you how many _PROTONS_ are in the _NUCLEUS_ of an atom of that element. :)</span>
The answer to 1 is D the answer to 2 is B the answer for 3 is C the answer to 4 is A and the answer to 5 is c or b
