The chemical reaction shown above takes place in a closed system. what is true about the system while the reaction occurs? a. the total number of particles in the system increases. b. the total number of particles in the system decreases. c. the total mass of the particles in the system stays the same. d. the total mass of the particles in the system increases.

the correct answer is letter c.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.