Name Date Period Ionic Bonding Puzzle Activity

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1 Name Date Period Ionic Bonding Puzzle Activity Introduction When metals and non-metals chemically react, the atoms will tend to form ions or charged atoms. Ions form because electrons are either gained or lost. Metals will generally form cations or positive ions, since they tend to donate electrons Non-metals will form anions or negative ions, since they tend to accept electrons. Activity In this activity you will create models of ionic compounds and observe the chemical formula of the binary compounds you have created. Your data will be recorded in a data table. Before you start: Color the cations one color and the anions another. Discussion/Conclusion (talk with your classmates and address in your write-up) Notice the shape and charge of each cation model. Why do you think there are slots in the cation models? (TIP: How do the atoms become ions?) Notice the shape and charge of the anion models. Why do you think there are tabs in the anion models? If you were to make a neutral atom following the model, what would the shape be? Group the ion models by charges. What do you notice about the number of tabs or slots? What do you notice about the tabs or slots and charge of all ions? Is there a pattern? Why do you think the model is made that way? In the compounds you formed, what is the final charge of all the compounds?

2 Ionic Bonding Puzzle Pre-Lab Questions 1. Metals electrons and become positive ions or (cations, lose). 2. Non-metals electrons and become negative ions or (gain, anions). 3. Cations and anions are to each other because of their. (attracted, charges, opposite) Al2O3 4. In a chemical formula, the show the of each atom in the. (subscripts, ratio, compound) 5. For an ionic compound, the of the cation and the anion need to to make a compound. The chemical shows the of each ion as a subscript to make a compound. (charges, number, neutral (use twice), formula, balance) 6. When writing the formula for a compound the comes first and the comes second. (cation, anion). 7. The cation name is the same as the. If the anion is it gets and ending. If any of the ions are, the name is what it is on the polyatomic ion list. (-ide, polyatomic, monatomic, metal) 8. Using the ion cards: What ratio will the +1 and -1 ions combine to balance the charge? What will be the formula for this compound? K 1+ + Cl 1-9. What ratio will the +2 and -1 ions combine to balance the charge? What will be the formula for this compound? I 1- Ca 2+ +

3 10. Remember, when naming cations of for transitions metals, a needs to come in parenthesis after its name to show its. (charge; roman numeral)

4 Combination: Titanium (IV) Cation symbol Anion symbol Chemical Formula Compound Name Drawing of your puzzle pieces and carbonate Bromide and Yttrium (III) Calcium and Phosphide Lithium and Oxide and Iron (III) Sodium and Iron (II) and Chloride and Silver (I) Sulfate and Lithium Copper (II) and Oxide Potassium and Sulfide

5 Make the following compounds with the puzzle pieces. Write their correct formulas and names. Combination: Gold (III) and Bromide Cation symbol Anion symbol Chemical Formula Compound Name Drawing of your puzzle pieces Permanganate and potassium Calcium and Lithium and and iodide Iron (II) and Iron (III) and Chlorine and Magnesium and Iodide Lithium and Carbonate Calcium and

6 OH -1 H3O +1 Mg +2 Y +3 OH -1 P -3 Cl -1 Mg +2 Cl -1 Fe +3 Br -1 P -3 Ag +1 Br -1 Ag +1 Br -1 Fe +2 S -2 Li +1 PO4-3 H3O +1 O -2 Cu +2 Li +1 Li +1 NO3-1 Ti +4 O -2 Na +1 CO3-2 Fe +3 Na +1 Carbonate I -1

7 OH -1 H3O +1 Be +2 Au +3 OH -1 Cs +1 N -3 NO2-1 Nitrite CN -1 Cyanide Cn +3 I -1 PO3-3 Phosphite NH4 +1 Ammonium Br -1 Ag +1 NO3-1 Ni +2 Nitrate Sr +2 SO3-2 Sulfite Sr +2 PO4-3 H3O +1 CO3-2 Ba +2 Rb +1 Carbonate Li +1 NO3-1 Nitrate Ti +4 SO4-2 Na +1 S -2 Sulfate Fe +3 Na +1 C2H3O2-1 Acetate

8 -1 Acetate C 2 H 3 O 2-1 Nitrate NO 3-1 Nitrite NO 2-3 Phosphite PO 3 +1 Ammonium NH 4 OH -1-3 PO 4-1 Permanganate MnO 4 Cyanide CN -1-2 Sulfate SO 4-2 Sulfite SO 3-2 Chromate CrO 4-2 Carbonate CO 3