Which of the following most likely happens during a chemical change? No new substances are formed.
Properties of a substance remain unchanged.
Composition of a substance is same as before.
Different substances than before are produced.

The correct answer is c

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