Your SlideShare is downloading. ×
Lecture 7.2- Ionic Compounds
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Lecture 7.2- Ionic Compounds

3,545
views

Published on

Section 7.2 lecture for Honors & Prep chemistry

Section 7.2 lecture for Honors & Prep chemistry

Published in: Education

0 Comments
1 Like
Statistics
Notes
  • Be the first to comment

No Downloads
Views
Total Views
3,545
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
40
Comments
0
Likes
1
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. Bellwork- Ions Draw a sketch of the periodic table and label ion charges for groups 1A, 2A, 3A(13), 5A(15), 6A(16), & 7A(17).
  • 2. Lecture 7.2- Ionic Compounds
  • 3. Compounds composed of cations and anions are called ionic compounds.
  • 4. Compounds composed of cations and anions are called ionic compounds. Ionic compounds are electrically neutral. (positive charges always equal the negative charges)
  • 5. Aluminum metal and the nonmetal bromine react to form an ionic solid, aluminum bromide.
  • 6. The electrostatic forces that hold ions together in ionic compounds are called ionic bonds.
  • 7. An ionic compound is also called a salt.
  • 8. An ionic compound is also called a salt. Salts contain positive and negative ions that alternate in a perfect 3D pattern called a crystal lattice.
  • 9. The transfer of an electron from Na Na Cl to Cl creates an anion and a cation. Na+ Cl-
  • 10. The transfer of an electron from Na Na Cl to Cl creates an anion and a cation. Na+ Cl-
  • 11. The transfer of an Their electron opposite from Na charges Na Cl to Cl attract creates them to an each anion other. and a cation. Na+ Cl-
  • 12. Take an atomic-level look at the formation of KCl.
  • 13. •A chemical formula shows the kinds and numbers of atoms in the smallest representative unit of a substance.
  • 14. •A chemical formula shows the kinds and numbers of atoms in the smallest representative unit of a substance. •A formula unit is the lowest whole-number ratio of ions in an ionic compound.
  • 15. NaCl is the chemical formula for sodium chloride.
  • 16. NaCl is the chemical formula for sodium chloride.
  • 17. NaCl is the chemical formula for sodium chloride.
  • 18. NaCl is the chemical formula for sodium chloride.
  • 19. Determining formulas for ionic compounds
  • 20. Determining formulas for ionic compounds The positive charges must equal the negative charges, because the compound is neutral.
  • 21. Determining formulas for ionic compounds The positive charges must equal the negative charges, because the compound is neutral. Mg2+ and Cl- make MgCl2 because you need 2 Cl- to cancel the 2+ charge on Mg
  • 22. What is the formula of a compound containing ions of Al and O?
  • 23. What is the formula of a compound containing ions of Al and O? Al3+ O2-
  • 24. What is the formula of a compound containing ions of Al and O? Al3+ O2- Find the least common multiple! 3+ x 2 = 6+ 2- x 3 = 6-
  • 25. What is the formula of a compound containing ions of Al and O? Al3+ O2- Find the least common multiple! 3+ x 2 = 6+ 2- x 3 = 6- So you need 2 Al3+ and 3 O2- Al2O3
  • 26. What is the formula of a compound containing ions of Al and O? Al 3+ O2- Al2O3 The charge on one ion becomes the subscript for the other ion!
  • 27. Most ionic compounds are crystalline solids at room temperature.
  • 28. Most ionic compounds are crystalline solids at room temperature. Ionic compounds have high melting points.
  • 29. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 30. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 31. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 32. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 33. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 34. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 35. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 36. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 37. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 38. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 39. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 40. The orderly arrangement of component ions produces the beauty of crystalline solids.
  • 41. Simulation 5 Simulate the formation of ionic compounds at the atomic level. Simulation 5
  • 42. • The coordination number of an ion is the number of ions of opposite charge that surround the ion in a crystal. • In NaCl, each ion has a coordination number of 6.
  • 43. • In CsCl, each ion has a coordination number of 8. • In TiO2, each Ti4+ ion has a coordination number of 6, while each O2- ion has a coordination number of 3.
  • 44. Electricity is the directed movement of charged particles. To conduct electricity, a substance or mixture must contain positive or negative charges that can move freely.
  • 45. Ionic compounds can conduct an electric current when melted or dissolved in water.
  • 46. Ionic compounds can conduct an electric current when melted or dissolved in water.
  • 47. 7.2 Section Quiz. 1. Which chemical formula is incorrect? a. KF2 b. CaS c. MgO d. NaBr
  • 48. 7.2 Section Quiz. 1. Which chemical formula is incorrect? a. KF2 b. CaS c. MgO d. NaBr
  • 49. 2. Ionic compounds can conduct an electric current a. only when melted. b. when melted or dissolved in water. c. only when dissolved in water. d. when solid or melted.
  • 50. 2. Ionic compounds can conduct an electric current a. only when melted. b. when melted or dissolved in water. c. only when dissolved in water. d. when solid or melted.
  • 51. 3. At room temperature, most ionic compounds are a. crystalline solids. b. liquids. c. gases. d. soft, low melting-point solids.
  • 52. 3. At room temperature, most ionic compounds are a. crystalline solids. b. liquids. c. gases. d. soft, low melting-point solids.