1 / 20

Mastering Chemical Bonding: Learning to Balance Charges

Understand the principles of balancing charges in chemical bonding. Learn how to achieve equilibrium by pairing ions with opposite charges. Practice balancing different compounds like magnesium chloride and lithium nitride. Enhance your counting skills by determining the number of atoms in various molecules.

daire
Télécharger la présentation

Mastering Chemical Bonding: Learning to Balance Charges

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. Lesson Bonding (Week 12)

  2. Charges for Bonding • To bond, you must balance out the charges like we have been learning. • To balance out (-4) you must have a …….? • To balance out a (+2) you must have a ……?

  3. Balancing Charges • Right…..to balance out a (-4), you must have a total of (+4)…… • And to balance out a (-2), you must have at least (+2).

  4. Balancing Charges • So….if Oxygen is (-2)…...you must have a (+2) charge…… • But can you use more than one ion to get a (+2) charge… • Na + Na = 2 Na • (+1) + (+1) = (+2)

  5. Guided Practice – Number 1 So if you had (Mg+2)…how many (Cl-1) would you need to balance it out…..?

  6. Guided Practice – Number 1 So if you had (Mg+2)…how many (Cl-1) would you need to balance it out…..? Yes…….you need 2 of them…… MgCl2 (+2) + (-1) + (-1) = 0

  7. Guided Practice – Number 2 • If you had a (N-3) how many (Li +1) would you need to balance it out? • (N-3) would need a total of (+3) to balance it out…….so how many (Li +1) does it take to make a (+3) ?

  8. Guided Practice – Number 2 • (N-3) would need a total of (+3) to balance it out…….so how many (Li +1) does it take to make a (+3) ? • Li3N

  9. How do you know which to list first…..? • Metals are listed first….then nonmetals… • So instead of NLi3 it is Li3N

  10. Guided Practice – Number 3 • Which would it be… • BeO or OBe

  11. Guided Practice – Number 3 • Which would it be… BeO or OBe Right………BeO since metals are listed first

  12. Counting • Remember when you count atoms…it is good to fill in the bubbles until you get really good at counting…. • 4NaCl = NaCl + NaCl + NaCl + NaCl = 4 Sodium and 4 Chlorine • 3 Li3N = Li3N + Li3N + Li3N • = 9 Lithium and 3 Nitrogen

  13. Guided Practice – Number 4 • 4CaCl2 • How many CaCl2 ? • How many Calcium atoms? • How many Chlorine atoms?

  14. Guided Practice – Number 4 • 4CaCl2 • How many CaCl2 ? • 4 CaCl2 = CaCl2 + CaCl2 + CaCl2 + CaCl2 • How many Calcium atoms? 4 • How many Chlorine atoms? 8

More Related