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  2. Ammonium nitrate - Wikipedia

    en.wikipedia.org/wiki/Ammonium_nitrate

    As ammonium nitrate is a salt, both the cation, NH + 4, and the anion, NO − 3, may take part in chemical reactions. Solid ammonium nitrate decomposes on heating. At temperatures below around 300 °C, the decomposition mainly produces nitrous oxide and water: NH 4 NO 3 → N 2 O + 2 H 2 O. At higher temperatures, the following reaction ...

  3. Chemical decomposition - Wikipedia

    en.wikipedia.org/wiki/Chemical_decomposition

    The reaction is written as: H 2 CO 3 → H 2 O + CO 2. Other carbonates will decompose when heated to produce their corresponding metal oxide and carbon dioxide. [5] The following equation is an example, where M represents the given metal: MCO 3 → MO + CO 2. A specific example is that involving calcium carbonate: CaCO 3 → CaO + CO 2

  4. Chemical reaction - Wikipedia

    en.wikipedia.org/wiki/Chemical_reaction

    Also, some relatively minor additions to the reaction can be indicated above the reaction arrow; examples of such additions are water, heat, illumination, a catalyst, etc. Similarly, some minor products can be placed below the arrow, often with a minus sign. An example of organic reaction: oxidation of ketones to esters with a peroxycarboxylic acid

  5. Intumescent - Wikipedia

    en.wikipedia.org/wiki/Intumescent

    These intumescent materials produce a light char which is a poor conductor of heat, thus retarding heat transfer.Typically the light char consists of microporous carbonaceous foam formed by a chemical reaction of three main components: ammonium polyphosphate, pentaerythritol, and melamine. [2]

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  8. Chemical synthesis - Wikipedia

    en.wikipedia.org/wiki/Chemical_synthesis

    This requires mixing the compounds in a reaction vessel, such as a chemical reactor or a simple round-bottom flask. Many reactions require some form of processing ("work-up") or purification procedure to isolate the final product. [1] The amount produced by chemical synthesis is known as the reaction yield.

  9. Negative thermal expansion - Wikipedia

    en.wikipedia.org/wiki/Negative_thermal_expansion

    3 also is an example of controllable negative thermal expansion. Cubic materials like ZrW 2 O 8 and also HfV 2 O 7 and ZrV 2 O 7 are especially precious for applications in engineering because they exhibit isotropic NTE i.e. the NTE is the same in all three dimensions making it easier to apply them as thermal expansion compensators. [8]