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Today we will…

Today we will…. Discuss yesterday’s lab Learn about polyatomic ions Learn about metallic bonds. Daily Quiz. Daily Quiz. Name the following ionic compounds. Daily Quiz. 1. CaS. Daily Quiz. 2. MgCl 2. Daily Quiz. 3. LiOH. Daily Quiz. 4. K 2 SO 4. Daily Quiz. 1. CaS. Daily Quiz.

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Today we will…

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  1. Today we will… Discuss yesterday’s lab Learn about polyatomic ions Learn about metallic bonds

  2. Daily Quiz

  3. Daily Quiz Name the following ionic compounds.

  4. Daily Quiz 1. CaS

  5. Daily Quiz 2. MgCl2

  6. Daily Quiz 3. LiOH

  7. Daily Quiz . 4. K2SO4

  8. Daily Quiz 1. CaS

  9. Daily Quiz 1. CaS calcium sulfide

  10. Daily Quiz 2. MgCl2

  11. Daily Quiz 2. MgCl2 magnesium chloride

  12. Daily Quiz 3. LiOH

  13. Daily Quiz 3. LiOH lithium hydroxide

  14. Daily Quiz 4. K2SO4

  15. Daily Quiz . 4. K2SO4 potassium sulfate

  16. Making Ionic Compounds

  17. Making Ionic Compounds

  18. Making Ionic Compounds • Classifying • What kind of energy was released by the reaction?

  19. Making Ionic Compounds • Using Numbers • How do you know that the magnesium metal reacts with certain components of the air?

  20. Making Ionic Compounds • Predicting • Mg reacts with both O and N from the air. • Predict the binary formulas of both products. • Write the names of these two compounds.

  21. Making Ionic Compounds • 5. Analyzing and concluding • The product formed from Mg and O is white, and the product formed from Mg and N is yellow. • From your observations, which compound makes up most of the product?

  22. Making Ionic Compounds • 6. Analyzing and concluding • Did the Mg compounds and water conduct electric current? • Do the results indicate whether or not the compounds are ionic?

  23. Making Ionic Compounds • 7. Error Analysis • If the magnesium lost mass instead of gaining mass, what do you think was a possible source for the error?

  24. Tonight’s Homework: • Problem 39 on page 227 • Questions 40, 42, and 44 on page 231.

  25. Polyatomic Ions • Most ionic compounds are binary…

  26. Polyatomic Ions • Most ionic compounds are binary… • …but sometimes a whole group of atoms will carry a charge together

  27. Polyatomic Ions • Most ionic compounds are binary… • …but sometimes a whole group of atoms will carry a charge together. • A polyatomic ion is an ion made up of more than one atom.

  28. Polyatomic Ions • Example:

  29. Polyatomic Ions • Example: • NO3- • nitrate

  30. Polyatomic Ions • A polyatomic ion acts just like a monatomic ion. • K+ NO3- • potassium nitrate

  31. Polyatomic Ions • A polyatomic ion acts just like a monatomic ion. • KNO3 • potassium nitrate

  32. Polyatomic Ions • A polyatomic ion acts just like a monatomic ion. • Ca+2 NO3- • calcium nitrate

  33. Polyatomic Ions • Because a polyatomic ion is a unit, you never change the subscripts within the ion. • Ca+2 NO3- • calcium nitrate

  34. Polyatomic Ions • Because a polyatomic ion is a unit, you never change the subscripts within the ion. • Ca+2 (NO3)- • calcium nitrate

  35. Polyatomic Ions • Because a polyatomic ion is a unit, you never change the subscripts within the ion. • Ca(NO3)2 • calcium nitrate

  36. Metallic Bonds • When atoms of metals get together, the atoms don’t give away electrons

  37. Metallic Bonds • When atoms of metals get together, the atoms don’t give away electrons. • Instead, the outer electron shells overlap so the electrons can easily float from atom to atom

  38. Metallic Bonds • When atoms of metals get together, the atoms don’t give away electrons. • Instead, the outer electron shells overlap so the electrons can easily float from atom to atom. • These delocalized electrons form an electron sea.

  39. Metallic Bonds

  40. Metallic Bonds

  41. Metallic Bonds

  42. Metallic Bonds

  43. Metallic Bonds

  44. Metallic Bonds

  45. Metallic Bonds

  46. Metallic Bonds

  47. Metallic Bonds

  48. Homework: • 19-23 on pg 224 • 24-28 on pg 225 • 40, 42, 44 on pg 231

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