Aliquid is heated and a solid forms at the bottom of the beaker. is this a physical or chemical change?

If it is still that liquid to solid then it is an physical change but if it is not that liquid to solid the it is chemical change.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later