Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Polyatomic Ions

ammonium NH4 1+
hydronium H3O 1+
cyanide CN 1-
hydroxide OH 1-
nitrite NO2 1-
nitrate NO3 1-
permanganate MnO4 1-
thiocyanate SCN 1-
acetate CH3COO- (C2H3O2 1-)
peroxide O2 2-
sulfite SO3 2-
sulfate SO4 2-
thiosulfate S2O3 2-
phosphate PO4 3-
oxalate C2O4 2-
chromate CrO4 2-
dichromate Cr2O7 2-
hydrogen carbonate (bicarbonate) HCO3 1-
hydrogen sulfite (bisulfite) HSO3 1-
hydrogen sulfate (bisulfate) HSO4 1-
monohydrogen phosphate HPO4 2-
di hydrogen phosphate H2PO4 1-
Bromate BrO3 1-
Chlorate ClO3 1-
Chlorite ClO2 1-
hypo chlorite ClO 1-
Phosphite PO3 3-
iodate IO3 1-
perchlorate ClO4 -
periodate IO4 -
Silicate SiO4 4-
Created by: elindberg