If you change the state of something, say, liquid to solid, is it a physical or 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

Noble gases is far right

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

The answer is d.potassium