Kernels of corn are heated and become popcorn. why is this a chemical change? a) the size and color of the corn have changed b) the kernels change due to their reaction of heat c) the volume of the kernels expand d) the mass of the kernels increase

b is correct. the heat is what activates the cereals to pop  

can you attach the

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.