1. 3 Balancing Equations Word Equations

2. What is the big idea? The universe is balanced!

3. Al I Al I __Al (s) + __ I 2(g)  __ AlI 3(s) 3 2 2 Balance the equation Each element has the same number on each side ProductsReactants 2 6 2 6 You can only put coefficients in front of each formula The total number of atoms is the coefficient x the subscript

4. __C 3 H 8(s) + O 2(g)  __ CO 2(g) + __ H 2 O (g) 543 10 Oxygen + 6 Oxygen4 Oxygen ½ is allowed but not ¼……….

5. __C 8 H 18(s) + __ O 2(g)  __ CO 2(g) + __ H 2 O (g) 12.5 98 25 Oxygen + 16 Oxygen9 Oxygen ½ is allowed but not ¼……….

6. Phase Symbols (s) solid Fe (s) (l) liquid H 2 O (l) (g) gaseous O 2(g) (aq) aqueous NaCl (aq) dissolved in water

7. Common Acids HClHydrochloric Acid H 2 SO 4 Sulphuric Acid H 3 PO 4 Phosphoric Acid HNO 3 Nitric Acid CH 3 COOHAcetic Acid H 2 CO 3 Carbonic Acid Stomach Coke Fluoride Treatment Vinegar Dissolving metals Acid Rain Carbonated Beverages

8. Hydrates MgSO 4. 5H 2 O Magnesium sulphate pentahydrate BaCl 2. 6H 2 O Barium chloride hexahydrate FeSO 4. H 2 O Iron II sulphate monohydrate

9. Greek prefixes 1 – mono 2 – di 3 – tri 4 – tetra 5 – penta 6 - hexa 7 - hepta 8 - octa 9 – nona 10 - deca 11 - undeca 12 - dodeca

10. 332 Word Equations A solution of barium phosphate is mixed with aqueous sodium sulphate to yield solid barium sulphate and aqueous sodium phosphate. Ba 3 (PO 4 ) 2(aq) + Na 2 SO 4(aq) →BaSO 4(s) + Na 3 PO 4(aq)

11. A solution of aluminum chloride, carbon dioxide, and water can be prepared by mixing pure aluminum carbonate with a solution of hydrochloric acid. Al 2 (CO 3 ) 3(s) + HCl (aq)  CO 2(g) + AlCl 3(aq) + H 2 O (l) 3236

12. Oxidizing MaterialCombustible Material What happens if you mix? Who wants to try it? and

13. H 2 SO 4 Demo: Solid sucrose reacts with oxygen to produce carbon dioxide gas, water, and energy. The catalyst H 2 SO 4 initiates the reaction. C 12 H 22 O 11(s) + O 2(g) CO 2(g) + H 2 O (l) + energy The catalyst goes on top of the arrow 12 11 Workbook Assignment # 3