Question

При нагревании студенистого вещества голубого цвета образовался черный порошок. Состав студенистого вещества и черного порошка разный. К каким явлениям (физическим или химическим) можно отнести этот процесс? На чем основан ваш вывод?

Answer 1

Студенистое вещ-во- Cu(OH)2
Черный порошок - CuO
Cu(OH)2=>{t} CuO+H2O
Реакция разложения под действием нагревания. Химический процесс

Answer 2

Process of Heating a Blue Solid to Form Black Powder

When a blue solid substance is heated and transforms into black powder, it indicates a change in its composition and physical properties. This process can be attributed to a chemical reaction rather than a physical change. The change in color and composition suggests that new substances are being formed as a result of the heating process.

Chemical Reaction and Composition Change

The transformation of the blue solid into black powder involves a chemical reaction. During the heating process, the bonds between the atoms in the blue solid are broken, and new bonds are formed, resulting in the formation of a different substance with a different composition. The change in color indicates a change in the arrangement of atoms and the absorption or reflection of light.

Conclusion

Based on the information provided, the process of heating the blue solid to form black powder can be attributed to a chemical reaction. The change in color and composition suggests that new substances are being formed. However, without specific details about the nature of the blue solid and the black powder, it is difficult to provide a more precise explanation.