The ordinary name of a black substance can vary widely depending on the context, but one common example is "charcoal." Charcoal is a black, lightweight material made from carbon-rich substances, often used as a fuel or in art. Other examples could include black paint, black soil, or soot, each serving different purposes.
While presence of starch is indicated by the bluish-black color change of a substance with the introduction of Iodine, it doesn't necessarily mean the absence of starch is the substance doesn't become blue or black in color. If a substance doesn't become blue or black in color on the application of iodine, it means the substance doesn't form any complex with Iodine. Generally, when a substance creates a complex with Iodine, it is in blue color.
Another name for a substance is a material.
The shiny black substance is graphite. It is mixed with clay to use in pencils.
Atom of carbon?
It's called sublimination
The black substance formed in Bunsen burner experiments is called soot. It is a carbonaceous material that is produced when there is incomplete combustion of hydrocarbons in the presence of oxygen.
tar
A chemical element.
The black substance formed on copper is called copper oxide. It is a chemical compound that forms when copper is exposed to oxygen in the air, resulting in a black or greenish-black tarnish on the surface of the copper.
It is currently believed that all spiral galaxies have a supergiant black hole at their centers and all galaxiesand globular clusters have several ordinary black holes scattered throughout them.
The black substance on burnt food is mostly carbon.
If you mean that black & white video, it's probably "John Legend - Ordinary people"
Matter
While presence of starch is indicated by the bluish-black color change of a substance with the introduction of Iodine, it doesn't necessarily mean the absence of starch is the substance doesn't become blue or black in color. If a substance doesn't become blue or black in color on the application of iodine, it means the substance doesn't form any complex with Iodine. Generally, when a substance creates a complex with Iodine, it is in blue color.
Another name for a substance is a material.
The chemical name for ordinary table salt is sodium chloride.
The shiny black substance is graphite. It is mixed with clay to use in pencils.