Types of Reactions. There are so many different reactions that happen inside and outside the human...
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Transcript of Types of Reactions. There are so many different reactions that happen inside and outside the human...
![Page 1: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/1.jpg)
Types of Reactions
![Page 2: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/2.jpg)
• There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into 5 major groups
![Page 3: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/3.jpg)
Synthesis Reactions
• Two or more substances combine to form a more complex substance (synthesis)
• 2 or more reactants• Only one product
![Page 4: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/4.jpg)
Synthesis reactions
• A + B AB
![Page 5: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/5.jpg)
Synthesis Reactions
• A and B may be elements or compounds• AB is always a compound• N2 + 3H2 2NH3
• Produces ammonia to be used in many things, like fertilizer, nylon and plastic.
![Page 6: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/6.jpg)
Examples
• 2Mg + O2 → 2MgO
• S + O2 → SO2
• 2Na + Cl2 → 2NaCl
![Page 7: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/7.jpg)
Decomposition Reactions
• A complex substance breaks down into simple substances (opposite of synthesis)
• 2 or more products• Only 1 reactant.
![Page 8: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/8.jpg)
Decomposition reactions
• AB A + B
![Page 9: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/9.jpg)
Decomposition Reactions
• AB is always a compound• A & B may be elements or
compounds• 2HgO Hg + O2
• Bleaching hair, antiseptic, rocket fuel
![Page 10: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/10.jpg)
Examples
• 2HgO → 2Hg + O2
• CaCO3 → CaO + CO2
![Page 11: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/11.jpg)
Single Replacement Reactions• An uncombined element replaces
another element that is in a compound.• 1 of the reactants must be an
uncombined element and the other an ionic compound.
• 1 of the products must be an uncombined element and the other an ionic compound.
![Page 12: Types of Reactions. There are so many different reactions that happen inside and outside the human body that chemists have tried to organize them into.](https://reader036.fdocuments.us/reader036/viewer/2022070404/56649f345503460f94c51738/html5/thumbnails/12.jpg)
Single Replacement Reactions• A + BC AC + B
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Single Replacement Reactions
• Zn + H2SO4 ZnSO4 + H2
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Double Replacement Reactions• Two compounds exchange positive ions.• All reactants and products are ionic.• Will only occur if at least 1 compound is
removed from solution.• by precipitation• One product is water• One product is a gas that bubbles away
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Double Replacement Reactions• AB + CD AD + CB
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Double Replacement Reactions
• 2NaOH + H2SO4 Na2SO4 + 2HOH
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Combustion Reactions
• A substance burns in the presence of oxygen to produce carbon dioxide and water.
• C3H8 + 5 O2 3 CO2 + 4H2O• Propane burns (with the help of
oxygen) to produce carbon dioxide and water
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Combustion Reaction
• Be careful not to confuse combustion reactions with single replacement reactions.
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Let’s practice!!!!!
• 3Mg + 2FeCl3 2Fe + 3MgCl2• 2Fe + 3F2 2FeF3
• SO3 + H2O H2SO4
• 2HI H2 + I2• Li2CrO4 + BaCl2 2LiCl + BaCrO4
• CH4 + 2O2 CO2 + 2H2O• 2Al2O3 4Al + 3O2