1. Day 38 – 10/6/15 Bell Work: 1. What happens during Ionic Bonding? 2. What does MgCl 2 mean? Agenda: – Chemical Formulas E.Q. Why do elements bond in very specific ratios of atoms?

2. Q: What is a characteristic of nonmetals? A.Nonmetals are dull looking. B.Nonmetals lose electrons easily. C.Nonmetals are good conductors. D.Nonmetals can be hammered into different shapes. 2 SC12.2.1.h DOK.1 NeSA-S

3. A: What is a characteristic of nonmetals? A.Nonmetals are dull looking. – Correct. Nonmetals do not have luster. B.Nonmetals lose electrons easily. – Incorrect. Nonmetals generally gain or share electrons. C.Nonmetals are good conductors. – Incorrect. Nonmetals are generally poor conductors of heat and electricity. D.Nonmetals can be hammered into different shapes. – Incorrect. Nonmetals are brittle and will break when pounded. 3 SC12.2.1.h DOK.1

4. Mathematics Booster Using the graph below, answer the following questions: 1)Which compound has the highest boiling point? 2)Which has a lower Boiling Point, HF or H 2 Te? How do you know?

5. Mathematics Booster Using the graph below, answer the following questions: 1)Which compound has the highest boiling point? H 2 O 2)Which has a lower Boiling Point, HF or H 2 Te? H 2 Te How do you know? H 2 Te is lower on the graph

6. Greek/Latin MeaningExamples valestrength, worth -alrelating to -culevery small cowith, together syntogether dedown, off, of

7. Based on the image below (and the Mr. Atomic story), define/describe what ionic bonding is. Think Pair Share after you have written your own definition. Draw your own pictures for ionic bonding.

8. Based on the animation below, define/describe what covalent bonding is. Think Pair Share after you have written your own definition. Draw your own pictures for covalent bonding.

9. Group 1 – Tristan, Jacob, Zach C, Vy, CeCe Group 2 – Grace, Ellen, Hansen Group 3 – Aaron, Hannah, Winnie, Nautica, Madison Group 4 – Kyle, Leo, Kayley

10. In groups, based on your knowledge from last class of chemical bonding, create a skit to demonstrate a chemical bond happening between the two elements your group is given. The other groups will have to identify the type of bond (Ionic or covalent) you had based on your skit.

11. Group 1 – Al 2 O 3, Ionic Bond Group 2 – CaCl 2, Ionic Bond Group 3 – CH 4, Covalent Bond Group 4 – AlF 3, Ionic Bond

12. Chemical Formulas Think back to your Chemical Vocabulary. MgCl 2 is the Chemical Formula for Magnesium Chloride. But, what does MgCl 2 mean? It means 1 Magnesium (brown) atom bonded to 2 Chlorine (orange) atoms making one molecule. But why do Magnesium and Chlorine bond this way? It has to do with their ionic charges. When bonded, the TOTAL Ionic charge of the molecule has to add up to zero.

13. Here are some special Ionic Charges: Ammonium(NH 4 ) 1+ Acetate(CH 3 CO 2 ) 1- Chlorate(ClO 3 ) 1- Hydroxide(OH) 1- Nitrate(NO 3 ) 1- Carbonate(CO 3 ) 2- Sulfate(SO 4 ) 2- Phosphate(PO 4 ) 3- Copper ICu 1+ Copper IICu 2+ Iron IIFe 2+ Iron IIIFe 3+ Chromium IICr 2+ Chromium IIICr 3+ Lead IIPb 2+ Lead IVPb 4+ These names do NOT change when naming chemical formulas.

14. **Use the following as a “shortcut” to figure out the Chemical Formula for an Ionic compound: 1.Find the Ionic Charges. 2.Switch the Ionic Charges to the bottom of the opposite Symbol. 3.Drop any “+” or “-“ or “1”. 4.Name the compound – Write the name of the first element, then write the name of the second element changing the ending to “-ide”.

15. Example: 1. Combine Aluminum and Oxygen Step 1Step 2Step 3Step 4 Al 3+ O 2- Al 2- O 3+ Al 2 O 3 Aluminum Oxide 2. Combine Sodium and Sulfur Step 1Step 2Step 3Step 4 Na 1+ S 2- Na 2- S 1+ Na 2 S Sodium Sulfide

16. Practice A: Combine Potassium and Chlorine Practice B: Combine Iron III and Oxygen Practice C: Combine Ammonium and Sulfate (HINT: You NEED your book for this one.) Summary Why do elements bond in very specific ratios of atoms?