Polyatomic Ions

15 Points Per Correct Answer - No time limit  

1. Dichromate is a toxic substance that is usually insoluble in water. What is the formula for this polyatomic ion? Cr2O7 (2-) CrO4 (2-) Cr2O8 (2-) Cr (2-)

2. Hydroxide is a popular ion used in bases. What is its formula? O2H (-3) H2O OH (1-) H (1+)

3. Perchlorate has multiple uses. Its found in matches, flares, explosives, and even nuclear reactors. So what is the formula for this polyatomic ion? ClO3 (1-) ClO (1-) ClO2 (1-) ClO4 (1-)

4. Ammonium, not to be confused with ammonia, allowed Nazi Germany to start World War 1. Using the nitrogen for both fertilizer and bombs, the Kaiser had no more need to import across the Atlantic Ocean. So which of these polyatmoic ions is ammonium? NH3 H2N (1-) NH (1-) NH4 (1+)

5. Filter tipped ciggaretes are possible thanks to Acetate Products Lmt. What is the formula for the polyatomic ion, acetate? CHO (1-) C2H3O2 (1-) CH2O7 (2-) C2H2O2 (2-)

6. Ammonium nitrate is heavily used in explosives and fertilizers. What is the formula for the polyatomic ion, nitrate? N2O (0) NO2 (-1) NO3 (1-) NO (0)

7. Time to do some spring cleaning, and we have all our cleaning products in the kitchen. Sodium sulfite is one popular compound found in these cleaners. What is the formula for the polyatomic ion, sulfite? SO4 (2-) SO3 (2-) SO3 (1-) SO2 (1-)

8. "Someone's poisoned the water hole!" Cyanide poisoning is one type of poisoning found in water. What is the formula for the polyatomic ion, cyanide? CN (1-) CN (2-) CNS (1-) CNS (2-)

9. In 1978 an agency in Florida was created called the Florida Institute of Phosphate Research. What is the formula for the polyatomic ion, phosphate? PO2 (3-) PO3 (2-) PO4 (3-) PO4 (2-)

10. Pottasium permanganate is not something I would recommend tasting. It's said that consuming 10-20 grams of the stuff could kill a person. What is the formula for the polyatomic ion, permanganate? MnO3 (1-) MnO3 (2-) MnO4 (1-) MnO4 (2-)