Final answer:
Black ink is a heterogeneous mixture consisting of a pigment, solvent, and additives.
Step-by-step explanation:
Black ink is a heterogeneous mixture. It consists of several components, including a pigment, a solvent, and additives.
The pigment provides color to the ink and is usually a carbon-based compound, such as carbon black or iron gallate. The solvent, typically water or alcohol, helps dissolve and transport the pigment onto the paper. Additives like surfactants and preservatives are also present to improve flow and prevent microbial growth.
Overall, the combination of these different components makes black ink a heterogeneous mixture, as the individual components can be seen and separated from each other.
Learn more about the composition of black ink