Kemi, joner

Kemi, joner - an exercise made by LukasNordal on Spellic.com.
1. Fold the right part of the paper back so that you can't se the answers.
2. Write the correct answer in the space below each question.
3. When done, fold the paper back and compare your answers.
Fosfatjon
Karbonatjon
Nitritjon
Cyanidjon
Nitratjon
Sulfatjon
Sulfitjon
Hydroxidjon
Ammoniumjon