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?

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the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.