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What is Ammonium Dichromate?
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Properties of (NH4)2Cr2O7
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It’s hazards
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Applications in daily life
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An experiment with Ammonium Dichromate
WHAT IS AMMONIUM
DICHROMATE?
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(NH4)2Cr2O7 A salt that forms orange, monoclinic
crystals; made from ammonium sulfate and sodium
dichromate; soluble in water and alcohol; ignites
readily; used in photography, lithography,
pyrotechnics, and dyeing. Also known as ammonium
bichromate.
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Formula: (NH4)2Cr2O7
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Molecular Weight: 252.07 g/mol
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Melting Point: 1800C
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Boiling Point: Decomposes
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State at Room Temperature: Solid
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Molecular or Ionic: Molecular
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Molecular Geometry: Tetrahedral
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Discription: Orange Crystals
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Uses: Oil Purification, Pickling, Leather
Tanning, Photography, Wood Preservative,
Catalysts
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Interesting Facts: Used in high school
chemistry labs to make "volcanos"
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Acute Health Effects:
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Chronic Health Effects:
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Cancer Hazard:
 Pyrotechnics
 Photography
 Lithography
 Dyeing
pigments
 Manufacturing
of alizarin
 Leather
tanning
 Oil
purification
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Research Question: What will be the result if
ammonium dichromate reacts with oxygen?

In my opinion, in the experiment the
ammonium dichromate will decomposes and
it will be a combustion reaction and as a
result of it, there will be some green or grey
dust particles.
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Metal Container
10g Ammonium Dichromate
Bunsen Burner
http://www.youtube.com/watch?v=CW4hN0dYnkM&list=LPUQJSgA0UH5k&index
=1&feature=plcp
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http://en.wikipedia.org/wiki/Ammonium_dichromate#Saf
ety
http://www.chemistryland.com/CHM130S/08Equations/TypesReactions/TypesReactions.htm
http://www.emsb.qc.ca/laurenhill/science/oxidation.html
http://nj.gov/health/eoh/rtkweb/documents/fs/0097.pdf
http://www.juliantrubin.com/encyclopedia/earthsciences/
volcano.html
http://www.chemistryreference.com/q_compounds.asp?CAS=7789-09-5
http://wiki.answers.com/Q/Describe_the_action_of_heat_
on_ammonium_dichromate
THANK YOU FOR
LISTENING… 