It is a mixture containing melanin.
mixturemarker ink is a mixture.
ink is a mixture of a carrier and a pigment.
Only a substance can be categorized as an element, a compound, or a mixture. An ink pen is not a substance, it is an implement.Added:The 'ink' (IN a pen) is definitely a mixture,not an element or pure compound.
compound
The evidence that exists that marker ink is a mixture is that the ink can be separated into black and other color pigments. This can be done on filter paper by dotting the marker just above the edge and adding ethyl alcohol, which drags the pigments separately across the paper.
Ink is a mixture.
It is a mixture, because everything in it retains their characteristic properties.
octopus have an ink gland that holds the ink until the octopus decides he is in danger and sprays its enemy with it. The ink of the octopus is toxic and if the predator stays withing reach of the ink for prolongued periods of time it can die.
ink
octopus
Squid and octopus ink is a mixture of melanin, mucus, and other compounds. Melanin gives the ink its dark color, while the mucus helps create a cloud of ink that confuses predators or allows the cephalopod to escape.
Mixture. A compound is a single substance consisting of atoms bound together (for a very simple definition): water (H2O), Ammonia, etc. A mixture is a combination of coumpounds/elements that are physically, not chemicall combined. When you dissolve sugar in water, you have a sugar-water mixture, not a compound since you do not obtain a single substance "sugar-water" with a unique chemical formula.