•common trends and similarities
•similar ions going down (ex: Mg+2 and Ca+2)
•same number of electron orbitals going across
You need a control so you have something to compare the experimental group on-- If you don't have a control group, how will you know what's changed?
Answer:
Cells of a multicellular organism
KOH is a compound containing two ions, K+ and OH-.
<span>The polyatomic ion present is OH- which is called hydroxide. </span>
<span>The compound is named potassium hydroxide.</span>