What do you observe.

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CLASSIFYING CHEMICAL REACTIONS

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Presentation transcript:

What do you observe

Single Displacement Reactions: In this type of reaction, a more reactive element displaces a less reactive element from its salt solution A + XY --> AY + X In this equation, A, X, and Y are elements and XY and AY are compounds.

Metal Reactivity Chart Most reactive metal wins out H

Examples of Single Displacement Reactions: 2Al + 3Fe(NO3)2  3Fe + 2Al(NO3)3 Zn + CuCl2  Cu + ZnCl2 Fe + Na3PO4  N.R. 2K + ZnCl2  2 KCl + Zn

What do you observe

Double-Displacement Reactions: In a double-displacement reaction, the two compounds exchange places in a solution to form two new compounds. AB + XY --> AY + XB 2 compounds  2 new compounds

Examples of Double-Displacement Reactions: Pb(NO3)2 + 2KI --> PbI2 + 2KNO3 FeS + 2HCl --> H2S + FeCl2 HCl + NaOH --> NaCl + H2O ”

Combustion Reactions: When a substance combines with oxygen releasing a large amount of energy in the form of light and heat, it is a combustion reaction. Oxygen is needed to Burn things. C + O2  CO2 + heat

Examples of Combustion Reactions: C3H8 + 5O2 --> 3CO2 + 4H2O + heat 2CH4 + 4O2  2CO2 + 4H2O + heat

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