1. Polyatomic Ions Grade: 11 - 12 Subject: Aquatic Science Date: 09/02/2013

2. 1Which of the following is the formula for nitrate: A NO 3 - B NO 2 - C NH 3 D NH 4 +

3. 2Which of the following is the first chemical waste product formed by the break down of urea/dead organisms/left-over food? A NH 3 B NH 4 C NH 3 + D NH 4 +

4. 3Which of the following is the formula for carbonate: A CO 4 3- B CO 2 - C CO 2 D CO 3 2-

5. 4Which of the following is the formula for phosphate: A PO 3 4- B PO 2 4- C PO 4 3- D PO 2 4+

6. 5The formula for ammonium is: A NH 3 B NH 4 C NH 3 + D NH 4 +

7. 6pH is a measurement of the concentration of ______ within a sample. A hydroxide B hydronium C hydrogen chloride D hydrubnium

9. 7OH ‑ is called: A Hydroxide B Hydronium C Hydrubnium D Hydrofluorium

10. 8During the nitrogen cycle, which of the following is the correct order of TAN compounds A NH 3 --> NO 3 - --> NO 2 - B NH 4 + --> NO 3 - --> NO 2 - C NH 3 --> NO 2 - --> NO 3 - D NH 4 + --> NO 2 - -->NO 3 -

11. 9Which of the following is the formula for nitrite: A NO 3 - B NO 2 - C NH 3 D NH 4 +

12. 10Which of the following is removed from an aquatic system by algae or water plants? A NO 3 - B NO 2 - C NH 3 D NH 4 +

13. 11Which of the following is the formula for ammonia: A NH 3 + B NH 3 - C NH 3 D NH 4 +