Which statement about exothermic reactions is accurate?
a. As reactants form products, the potential energy decreases.
b. As reactants form products, the potential energy increases.
c. Thermal energy is transferred from the product to the reacting substances.
d. Thermal energy is transferred from the surroundings to the reacting substances.

i think it's c. i'm not sure but i think so.

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.