Several things would happen to substance as it goes into a black hole. First and most obvious, it gets accelerated towards the black hole owing to gravitational influence (if it reaches relativistic speeds, this effect alone can cause it to shorten in the direction of acceleration, increase in mass, slow in time for a distant observer, and evidence other effects). Particularly for smaller black holes it would be 'spaghettified', or stretched thin by tidal forces near the black hole. Likely it will interact with the accretion disk and owing to friction and related effects, superheat to plasma temperature and emit significant amount of radiation including at x-ray energy - in fact black holes are quite efficient at converting matter to energy in this manner, perhaps as high as 40 percent of the mass might be lost this way. Once it crosses the event horizon, or boundary at which escape velocity is the speed of light, it would never leave; it must inevitably end up in the singularity at the black hole's center where all mass is concentrated. At that point the nature of the matter changes, our current physical theory does not yet describe the state of the substance at that point - or whether the substance remains matter at all, but theory indicates it occupies zero volume, has infinite density - and for it, due to relativistic effects, time stops entirely.
Anything that goes into a black hole is destroyed, gone something like that. Not even light can escape the expansive gravity of a black hole.
Clay is a naturally occurring substance with many uses, the use to which you are going to put it would decide how you would prepare it.
The Black Hole will explode because the gravity of a Black Hole is formed by the matter that is in the process of going intothe Black Hole, and not that matter that has already gone inside.
Resulting substance that goes down after filtration is the filtrate and the one that remains on the filter is residue.
The speed of light depends on the electrical properties of whatever substance it's in. It has nothing to do with what substance it used to be in before, or what substance it's going into next. -- If it goes from air into vacuum, its speed increases. -- If it goes from air into water, its speed decreases. -- If it goes from water into air, its speed increases. -- If it goes from water into diamond or jello, its speed decreases.
The Substances die
The pH goes down to 7 as it is the neutral substance
It gets wet. Beyond that, what happens depends on exactly what it's made of.
You sit there disappointed...
The substance will be compressed (increase in density) and if the compression is adiabatic, the temperature will go up since there is work being done on the system.
A change from gas to liquid, from solid to liquid, from liquid to gas, etc.
You would get utterly destroyed. Not even atoms remain in such a case.
Anything that goes into a black hole is destroyed, gone something like that. Not even light can escape the expansive gravity of a black hole.
Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.
Clay is a naturally occurring substance with many uses, the use to which you are going to put it would decide how you would prepare it.
It goes from a liquid to a solid.
For a black objects or black body, the light is absorb to the black body not going through. The absorbed light is transformed to thermal energy inside the object.