Synthesis and Decomposition Reactions

029 - Synthesis and Decomposition Reactions
Atoms or molecules combine to form a new compound in a synthesis reaction. Examples include the addition of oxygen to magnesium metal to create magnesium oxide and the addition of carbon dioxide to water to crete carbonic acid. A combine breaks down into new atoms or molecules in a decomposition reaction. Examples include the break down of sodium azide in a airbag or the break down of hydrogen peroxide in your cells. Decomposition reactions will often release heat as bonds are broken and new bonds are formed.
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Do you speak another language? Help me translate my videos:
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Music Attribution
Title: String Theory
Artist: Herman Jolly
sunsetvalley.bandcamp.com/trac...
All of the images are licensed under creative commons and public domain licensing:
de.wikipedia, DaimlerChrysler AgOriginal uploader was Cete at. Deutsch: Phasenfoto Der Funktionsweise von Lenkrad-Airbag Und Gurtstraffer, 1981, June 21, 2006. Deutsch: Mediaseite der DaimlerChryslerAG. commons.wikimedia.org/wiki/Fil....
---. Deutsch: Phasenfoto Der Funktionsweise von Lenkrad-Airbag Und Gurtstraffer, 1981, June 21, 2006. Deutsch: Mediaseite der DaimlerChryslerAG. commons.wikimedia.org/wiki/Fil....
"File:Rust.rost.JPG." Wikipedia, the Free Encyclopedia. Accessed August 23, 2013. en.wikipedia.org/wiki/File:Rus....
fr.wikipedia, Original uploader was Nécropotame at. Français : Schémas de La Synthèse D'hydrogène et D'oxygène Par Électrolyse de L'eau, (original upload date). Transferred from fr.wikipedia; transferred to Commons by User:Korrigan using CommonsHelper. commons.wikimedia.org/wiki/Fil....
GOKLuLe. English: Crucible Tong, September 17, 2011. Own work. commons.wikimedia.org/wiki/Fil....
Yossarian, Capt John. English: Photograph of a Burning Magnesium Ribbon with Very Short Exposure to Obtain Oxidation Detail., [object HTMLTableCellElement]. Own work. commons.wikimedia.org/wiki/Fil....

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Love you video. That's an opposite tech of synthesis.

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I don't understand where the Coefficient comes from. Like in Magnesium and Oxygen, their equation is 2Mg + O2 = 2MgO . Where did the Magnesium's coefficient come from? :(

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[@jeremy3591]

in the best way i can possibly describe, that coefficient is based upon how many of a certain thing you have in your equation.
so for instance, let's look at your example. the base equation given to you by most chemistry classes would probably be Mg + O2 = MgO and it would then ask you to balance the equation. now, since oxygen is a sneaky seven it has a 2 at the end of it when it stands alone. in our equation it DOES stand alone, so that's how we get Mg + O2. now, when it combines with magnesium, they both have a charge of 2. in magnesium's case, it's a 2+ charge, in oxygen's a 2- charge. they both cancel out and you therefore get MgO as the product.
however, stating Mg + O2 = MgO is incorrect because on the left you have TWO oxygens, but on the right, you have one. to make the equation "balanced" you need to make sure there are two oxygens on both sides. so, to do that, you place a 2 in front of the MgO which makes both magnesium and the oxygen have a 2. thus, we alos need to place a 2 in front of the magnesium on the left which gives us the overall equation 2Mg + O2 = 2MgO.
just now realizing this is from 1 year ago, so this might have been unnecessary. gg.

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[@masculinoroselyn7342]

coefficient is how many molecules are there in a compound.. to balance the equation,as stated in the law of conservatiob of mass,the no. of atoms in the reactant side will be the same with the product side.. so as you count having a coefficient of 2in Mg (Coefficient 2 will be multiply to its subscripts which is 1) makes them balance with the product side which also has 2atoms of Mg.

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