Sodium explodes in water and chlorine is a poisonous gas. why is sodium chloride (nacl) edible (why can we eat it)? a) because it tastes good. b) because sodium explodes in water. c) because when sodium and chlorine bond it changes their properties. d) without salt we couldn't have good popcorn.

C, as chemical properties change once bonds are formed due to the atoms forming the molecule having less free electrons in the outer shell to react with other elements

C. Chemical properties change when they bond together.

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