* Homogeneous Mixture: A homogeneous mixture has a uniform composition throughout. The different components are evenly distributed and cannot be easily separated by simple physical means.
* Heterogeneous Mixture: A heterogeneous mixture has a non-uniform composition. Different components are visibly distinct and can be separated using simple methods like filtration or decantation.
* Hydrogen Sulfide: Hydrogen sulfide is a compound, meaning it is formed by the chemical combination of two or more elements (hydrogen and sulfur) in a fixed ratio. It is not a mixture of separate substances.
In summary: Hydrogen sulfide is a compound, not a mixture. It has a uniform composition and is considered homogeneous.
