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Warm Up: 4 Minutes

Write the Learning Target. Warm Up: 4 Minutes. Stay in your own seat. You should be working SILENTLY. Hint: Periodic Table and your naming sheet. DO NOT MOVE THE COMPUTERS. Log into your computer Go to m.socrative.com Enter r oom number: 230538 Finish all questions

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Warm Up: 4 Minutes

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  1. Write the Learning Target Warm Up: 4 Minutes Stay in your own seat You should be working SILENTLY Hint: Periodic Table and your naming sheet DO NOT MOVE THE COMPUTERS • Log into your computer • Go to m.socrative.com • Enter room number: 230538 • Finish all questions • When you are finished, check your grades on PS Connect

  2. Directions Go to Nearpod.com Click “JOIN SESSION” I will give you the code as soon as everyone is ready

  3. Agenda Warm Up- 7 Minutes Cornell Style Notes & Examples- 15 Minutes Guided Practice-11 Minutes Independent Practice- 17 Minutes Closing – 3 Minutes

  4. Goal For Today Calcium Chloride CaCl2 Student Given: Student Answer:

  5. Chemical Formula must include: 1. Correct Symbol for Element or Polyatomic Ion 2. Correct Subscript CaCl2 Exception: If there is one of an element, then a subscript is not needed.

  6. HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS? Step 1 Write the symbol and oxidation number (charge) for the cation [oxidation number to be written as a superscript] Ca+2 Example Calcium Chloride

  7. HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS? Step 2 Write the symbol and oxidation number (charge) for the anion [oxidation number to be written as a superscript] Cl-1 Example Calcium Chloride

  8. HOW TO WRITE CHEMICAL FORMULAS FOR IONIC COMPOUNDS? Step 3 Use the criss-cross rule to write formula with the correct subscripts. Ca+2 Cl-1 Example Calcium Chloride CaCl2

  9. How to check your answer? CaCl2

  10. Example 1: Rubidium Sulfate

  11. Example 2: Chromium (III) Oxide

  12. Example 3: Magnesium Hydroxide

  13. Example 4: Strontium Phosphate

  14. Guided Practice • Teacher: 1. Will show the problem on the board • Students: • Take 16 seconds to write the components on paper, identifying oxidation numbers. • Take 33 seconds to speak with your shoulder partner to compose the formula for the compound • Be ready to share the name of the compound when Mr. Ghosh says SWAG

  15. We Do • Beryllium Selenide BeSe

  16. We Do • Copper (II) Nitrate Cu(NO3)2

  17. We Do • Silver(I) Phosphide Ag3P

  18. We Do • Potassium Sulfate K2 SO4

  19. Practice Makes Perfect 85% By completing this worksheet INDEPENDENTLY, it will help us to perfect the skill of writing chemical formulas of ionic compounds.

  20. Answer Key CaBr2 FeO KI CoNO3 Fe2S3 CuCl2 Rb2S BaSO4 KMnO4 Ni(NO3)2 V3(PO4)2 Mn2(Cr2O7)5 Al(SO3)3 PbS2 HgF RaS Be3N2 CsCl Os(HCO3)3 LiOH

  21. Closing • What is the process for composing the chemical formula of an ionic compound? Tomorrow we will talk about composing the chemical formulas of covalent compounds

  22. Warm Up: 4 Minutes Hint: What rule do we use for ionic compounds? Stay in your own seat DO NOT MOVE THE COMPUTERS • Log into your computer • Go to m.socrative.com • Enter room number: 230538 • Finish all questions • When you are finished, check your grades on PS Connect

  23. Write the Learning Target Warm Up: 4 Minutes Stay in your own seat You should be working SILENTLY Hint: Periodic Table

  24. Directions Go to Nearpod.com Click “JOIN SESSION” I will give you the code as soon as everyone is ready Your PIN:

  25. Agenda Warm Up- 7 Minutes Cornell Style Notes & Examples- 13 Minutes Guided Practice- 10 Minutes Independent Practice- 12 Minutes Closing – 3 Minutes

  26. What about Trioxygen Disulfide??? Is this compound ionic or covalent?

  27. HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND? Trioxygen Disulfide Step 1 Make sure the name uses prefixes to ensure the compound is covalent. Example

  28. HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND? Trioxygen Disulfide Step 2 Write the correct chemical symbol of the first element O Example

  29. HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND? Trioxygen Disulfide Step 3 Write the correct chemical symbol of the second element S Example

  30. HOW TO WRITE THE CHEMICAL FORMULA OF A COVALENT COMPOUND? Trioxygen Disulfide Step 4 Use prefixes to write the correct subscripts O3S2 Example

  31. Example 1 DisulfurHexafluoride

  32. Example 2 TriphosphorusTetroxide

  33. Example 3 Sulfur Hexabromide

  34. Guided Practice • Teacher: 1. Will show the problem on the board • Students: • Take 16 seconds to write the components on paper • Take 33 seconds to speak with your shoulder partner to compose the formula for the compound • Be ready to share the name of the compound when Mr. Ghosh says SWAG

  35. We Do DinitrogenTetrahydride

  36. We Do TrisulfurOctabromide

  37. We Do Sulfur Dibromide

  38. We Do Cobalt (II) Chloride

  39. Practice Makes Perfect 85% By completing this worksheet INDEPENDENTLY, it will help us to perfect the skill of writing chemical formulas of covalent compounds.

  40. Answer Key LiBr S3P4 KNO3 OCl FeI3 CuCl SF6 Ba(MnO4)2 Ga2(Cr2O7)3 CBr2 V2(CO3)3 Br2F9 C7N10 Na2O NO Mn2(Cr2O7)5 XeF2 SO2 Ir(HCO3)7 AsC8

  41. Closing • What is the process for composing the chemical formula of an covalent compound? • How is this different from the formula of an ionic compound?

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