1 / 9

Warm-up: 10/21

Warm-up: 10/21. Using the reference sheet with the list of polyatomic ions- pg. 12, answer the following: 1. Write out the chemical formulas for: a. hydroxide c. sulfite b. phosphate d. sulfate 2. What is the charge for each of the above polyatomics ?.

maina
Download Presentation

Warm-up: 10/21

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Warm-up: 10/21 Using the reference sheet with the list of polyatomic ions- pg. 12, answer the following: 1. Write out the chemical formulas for: a. hydroxide c. sulfite b. phosphate d. sulfate 2. What is the charge for each of the above polyatomics?

  2. NOTES #4: Polyatomic Ions • Polyatomic ions – more than one atom held together covalently that act as a single atom. All polyatomic ions have a charge, that’s why they’re called IONS.

  3. NOTES #4: Polyatomic Ions • When naming, write the metal name first, unchanged with any appropriate Roman Numeral (for multivalent cations). Then write the name of the polyatomic from the reference list. i.e. NaClO3 = Sodium chlorate Na+ ClO3-

  4. NOTES #4: Polyatomic Ions • NEVER change name or look of polyatomic. If you change the subscripts for any part of the polyatomic, then it is no longer that same polyatomic ion. i.e. NaClO3 = Sodium chlorate ≠ NaCl2O3 Na+ ClO3-

  5. NOTES #4: Polyatomic Ions • Use crisscross rule when writing formula. • When using the crisscross rule to determine the chemical formula, use parenthesis ( ) and place number as subscript outside of parenthesis ONLY if there is more than one of that polyatomic. i.e. Calcium chlorate = Ca(ClO3)2≠ CaClO6 Ca2+ ClO3-

  6. NOTES #4: Polyatomic Ions

  7. NOTES #4: Polyatomic Ions

  8. NOTES #4: Polyatomic Ions

  9. NOTES #4: Polyatomic Ions • Homework: Finish p.13

More Related