The equation CaCO3 -> CaO + CO2

  1. Detailed information about the chemical equation:

    • CaCO3: Calcium carbonate, consists of 1 calcium atom (Ca), 1 carbon atom (C) and 3 oxygen atoms (O).
    • CaO: Calcium oxide, consists of 1 calcium atom and 1 oxygen atom.
    • CO2: Carbon dioxide, consists of 1 carbon atom and 2 oxygen atoms.

  2. Reaction conditions:

    • The thermal decomposition reaction of calcium carbonate to form calcium oxide and carbon dioxide occurs when the temperature reaches about 800 – 900 degrees Celsius.

  3. Reaction process:

    • When heating calcium carbonate (CaCO3) at high temperature, CaCO3 molecules will decompose into calcium oxide (CaO) and carbon dioxide (CO2).
    • This reaction belongs to the category of decomposition reactions, in which one substance decomposes into two or more substances.

  4. Phenomena that occur:

    • When heating calcium carbonate, this white solid will gradually disappear and be replaced by a new compound, also white – calcium oxide.
    • At the same time, gas rises from the crucible, which is carbon dioxide gas.

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