When iron is burned, it combines with oxygen to form iron oxide. the table below shows the densities of all of these substances.

substance iron
oxygen
iron oxide
density
(g/cm3) 7.9 1.3 × 10-3 5.2
based on the information from the data table, which of these is a correct conclusion about the burning of iron?

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.