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Warm Up 4.5. Balance the following reactions: __ Ga + __O 2 __Ga 2 O 3 ___N 2 + ___H 2 ___NH 3 __ KBr + __Zn 3 (PO 4 ) 2 __ZnBr 2 +__K 3 (PO 4 ). __ Ga + __O 2 --> __Ga 2 O 3 ___N 2 + ___H 2 ___NH 3. __ KBr + __Zn 3 (PO 4 ) 2 __ZnBr 2 +__K 3 (PO 4 ).
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Warm Up 4.5 Balance the following reactions: __ Ga + __O2 __Ga2O3 ___N2 + ___H2 ___NH3 __KBr + __Zn3(PO4)2 __ZnBr2+__K3(PO4)
__ Ga + __O2 --> __Ga2O3 • ___N2 + ___H2 ___NH3
4 main Types of Chemical Rxns • Combination/Synthesis • Decomposition • Single Replacement • Double Replacement • Combustion • Neutralization
1. Synthesis/ Combination • 2 or more reactants produce 1 product • A + B AB • A + BC ABC • Ex: Iron rusting • Fe + O2 FeO2 (rust)
2. Decomposition • 1 Reactantproduces 2 or more products (reverse of synthesis) • AB A + B or ABC AB + C • Ex: Decomposition • of water • H2O ELECTRICITY H2 + 02
3. Single Replacement • Single elementreplaces another in a compound • AY + B BY + A Ex: Copper + Silver nitrate silver + copper (II) nitrate
4. Double Replacement • 2 Compoundsreact to form 2 new compounds • AX + BY AY + BX • Ex: Pb(NO3)2 + KI PbI2 + KNO3
Celebrity Chemical Reactions • Celebrity Video Clip