Types of Chemical Reactions .
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Transcript of Types of Chemical Reactions .
Types of Chemical Reactions
http://photoalbums.disneypost.com/data/500/muppets-lab-beaker-shock.jpg
Chemical ReactionsA chemical reaction is a process in which one or more reactants change to make one or more products.http://www.youtube.com/watch?v=uqDWbknpiVk&feature=related
http://www.youtube.com/watch?v=896vJj6eWYw&NR=1
https://www.youtube.com/watch?v=FofPjj7v414 **
http://images3.wikia.nocookie.net/muppet/images/f/f1/Bunsenbeakerpaperclips.jpg
Evidence of Chemical Reactions
1. Flammabilityhttp://www.youtube.com/watch?v=uj9D3mc7tVg&feature=relatedhttp://www.youtube.com/watch?v=MUensqImzXMhttp://www.youtube.com/watch?v=7Xu2YZzufTM **https://www.youtube.com/watch?v=zdeSRRjaiTE **
2. Change of Colorhttps://www.youtube.com/watch?v=kKlXe2mrnHQ **
https://www.youtube.com/watch?v=C5tOEBmBAHg **http://www.youtube.com/watch?v=hVK9Om4wzBM&feature=related
3. Precipitate https://www.youtube.com/watch?v=BGUfC3UUBkI ** https://www.youtube.com/watch?v=GgNA-CAjfVQ ** http://www.youtube.com/watch?v=egfXTENCRA0
http://www.youtube.com/watch?v=8RmVwz2fNGc&feature=related
4. Gas Productionhttp://www.youtube.com/watch?v=ezsur0L0L1c&feature=related
http://www.youtube.com/watch?v=9vk4_2xboOEhttp://www.youtube.com/watch?v=uQ05eALMBEo&feature=related
Synthesis Reactions
A chemical reaction in which two or more substances react to form a single substance.
A + B AB
H2 + O2 H2O2
http://upload.wikimedia.org/wikipedia/en/thumb/2/2c/Beaker_muppet.jpg/220px-thumb.jpg
Decomposition Reactions
A chemical reaction in which one compound breaks down to form two or more simpler substances.
AB A + B
CO2 C + O2 http://images4.wikia.nocookie.net/__cb20100211160001/muppet/images/thumb/c/cd/212-20.jpg/250px-212-20.jpg
Single-Replacement Reactions
A chemical reaction in which one element takes the place of another element in a compound.
A + BC AB + C
Zn + H2SO4 ZnSO4 + H2http://www.town.hull.ma.us/public_documents/hullma_memclass/hughes/0143F3CC-000F8513.0/Beaker%20and%20Dr.%20Bunsen%20Honeydew.jpg
Double-Replacement Reactions
A chemical reaction in which two compounds exchange positive ions and form two new compounds.
AB + CD AD + CB
CaCO3 + 2HCl CaCl2 + H2CO3
http://media.photobucket.com/image/beaker%20and%20Dr.%20Bunsen%20Honeydew/mattygrovesorme/DrBunsenAndBeaker.jpg
Combustion Reactions
A chemical reaction in a substance reacts rapidly with oxygen often producing heat and light. Usually include the elementsC, H, and O and produce water.
CH4 + 2O2 CO2 + 2H2Ohttp://static.guim.co.uk/sys-images/Arts/Arts_/Pictures/2008/07/18/BeakerHoneydew140x844.jpg
Energy & Reactions
The energy stored in the chemical bonds of a substance: chemical energy
Reactions involve breaking chemical bonds in the reactants and forming chemical bonds in the products.
Energy & Reactions
By comparing the chemical energy of the reactants with the chemical energy of the products you can determine if energy (heat or light) is released or absorbed.
Exothermic – Energy Released https://www.youtube.com/watch?v=SKSU72-1ERc
Endothermic – Energy Absorbed https://www.youtube.com/watch?v=MyAzjSdc3Fc
Reaction Rates
Some reactions happen to slow.
A catalyst:• Speeds up the chemical reaction rate• Enables the reaction to occur at a lower temperature
(without being permanently changed)