5.Carbonic acid releases Hotions into water in two stages. a. Write equations representing each stage

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.