READ THIS The term that chemists use to distinguish positive ions is cation and the terms used for negative ions is anion. The figure to the right can help you remember this. ONIONS CATS ARE GOOD ( POSITIVE) BAD ( NEGATIVE ) 7. Fill in the table Symbol 38 Sr2+ 1652 31 Ga3 s Br Atomic Number Atomic Mass Number of protons Number of Neutrons Number of Electrons Cation or anion 8. Can a 3+ ion of aluminum be made by adding 3 protons to an aluminum atom? Explain. 9. A student from Bedford High explains ion formation in the following way. "When you add an electron you get a positive charge because adding is positive in math" How would you school this missguided youth? TOP