Elements are different from each other because the number of which sub-atomic particle varies? neutrons

protons

electrons

Which of these best describes an ionic bond?

In which situation can a mixture always be called a solution

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d