After carrying out successive heating on a sample, a student obtained the following data: When the student discarded the sample they noticed several large black spots on the bottom of the dehydrated sample. Briefly explain what is happening during each heating. When should the student have stopped heating their sample

what is the question here. i think you messed up.

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.

c) should be the answer.

ok whats the question if not i cannot you i need question and need a thing to answer