3 Balancing Equations Word Equations

What is the big idea? The universe is balanced!

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

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

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

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

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

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

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

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)

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

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

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 Workbook Assignment # 3