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Chemical Reactions. Michelangelo La Mattina. What is chemical reaction?. Chemical reaction tells you the substances present before and after the reactions. Reactants – substances that undergo change Products – new substances formed as a result of that change

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chemical reactions

Chemical Reactions

Michelangelo La Mattina

what is chemical reaction
What is chemical reaction?
  • Chemical reaction tells you the substances present before and after the reactions.
  • Reactants – substances that undergo change
  • Products – new substances formed as a result of that change
  • The law of conservation of mass states that mass is neither created nor destroyed in a chemical reaction.
  • Should be balanced because the masses are equal, law conservation of mass
chemical equation
Chemical Equation
  • Reactants  Products
  • Ex.
    • C + O  CO2
    • Carbon + Oxygen  Carbon Dioxide
    • Chemical Equation is a representation of a chemical reaction in which the reactants and products are expressed as formulas.
    • The way it is read – “Carbon and oxygen react and form carbon dioxide” or “The reaction of carbon and oxygen yields carbon dioxide.
classifying reactions
Classifying Reactions
  • Synthesis Reactions
  • Decomposition Reactions
  • Single Displacement
  • Double Displacement
synthesis reactions
Synthesis reactions
  • Reaction in which two or more substances react to form a single substance
  • Ex. A + B  AB
  • 2Na + Cl2 2NaCl
  • Eggs + Brownie mixture + water + oil Brownies
decomposition
Decomposition
  • Opposite of Synthesis reaction
  • Compound breaks down into two or more simpler substances
  • AB  A + B
  • Ex. 2H2O  2H2 + O2
  • Candle  Wick + Wax
single displacement
Single Displacement
  • Reaction in which one element takes the place of another element in a compound
  • A + BC  B + AC
  • Ex. Cu + 2AgNO3  2Ag + Cu(NO3)2
          • Pepperoni + Cheese pizza  Cheese + Pepperoni Pizza
double displacement
Double Displacement
  • Two different compounds exchange positive ions and form two new compounds
  • AB + CD  AD + CB
  • Ex. Pb(NO3)2 + 2KI  PbI2 + 2KNO3
  • French fries and ketchup + Hamburger and soda  French fries and soda  Hamburger and Ketchup
where i got my info
Where I Got My Info

Science Textbook Pages 192 - 204

song in powerpoint
Song In PowerPoint
  • Howard Jones - And Do You Feel Scared
backgrounds cited
BACKGROUNDS CITED
  • httpyorkcountyschools.orgteachersjchristmanchemistry.jpg
  • httpwww.flickr.comphotostheshyfox299678392sizeso