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ICP. 12/18/12 Review of Chemical Reactions. Warmup. For 1-4 write endothermic or exothermic: Gives off heat Takes in heat Reactants + heat  Products Reactants  Products + heat. Which type of reaction is it?. ___ NaBr + ___ H 3 PO 4  ___ Na 3 PO 4 + ___ HBr

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Icp

ICP

12/18/12

Review of Chemical Reactions


Warmup

Warmup

For 1-4 write endothermic or exothermic:

  • Gives off heat

  • Takes in heat

  • Reactants + heat  Products

  • Reactants  Products + heat


Which type of reaction is it

Which type of reaction is it?

  • ___ NaBr + ___ H3PO4___ Na3PO4 + ___ HBr

  • ____ C2H4 + ____ O2 ____ CO2 + ____ H2O

  • ____ PbSO4 ____ PbSO3 + ____ O2

  • ____ H2O+ ____ SO3 ____ H2SO4

  • ____ Mg + ____ Fe2O3 ____ Fe + ____ MgO


Balance each reaction

Balance each reaction.

  • ___ NaBr + ___ H3PO4___ Na3PO4 + ___ HBr

  • ____ C2H4 + ____ O2 ____ CO2 + ____ H2O

  • ____ PbSO4 ____ PbSO3 + ____ O2

  • ____ H2O+ ____ SO3 ____ H2SO4

  • ____ Mg + ____ Fe2O3 ____ Fe + ____ MgO


Extra information in a chemical reaction

Extra information in a chemical reaction:

  • (l) – liquid

  • (s) – solid

  • (g) – gas

  • (aq) – aqueous (something dissolved in water)


Other information

Other information:

  • Why do we balance chemical equations?

    • In order to make chemical reactions obey the Law of Conservation of Mass

  • How many dots in an electron dot diagram?

    • This is based on what column an element is in on the periodic table.


Time to work on study guide

Time to work on Study Guide

  • Study guide is due on Thursday (day of the test).


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