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1 Topic: Matter, elements and compounds: Fuchsia vs melilac experiment In pyrotechnics, different colors can be made by varying the percentages of the same set of compounds, such is the case of the color "Fuchsia" and the color "Melilac", whose videos correspond to video 1 and video 2 respectively, and whose compositions are shown next: Fuchsia Melilac Potassium Perchlorate 27% Potassium Perchlorate 20% Strontium nitrate 27% Strontium nitrate 24% Copper oxide (11) 9% Copper oxide (11) 22% Magnalium or Mg 10% Magnalium or Mg 10% Chlorinated rubber 13% Chlorinated rubber 18% Red gum (acroid gum) 14% Red gum (acroid gum) 6% *Calculate the percentage of strontium and copper in both compositions, compare the percentages, and justify their effects on color by noting the role of copper and the role of strontium in color. 2 Topic: Periodic table and oxidation numbers: Dragon eggs (video 3) are a pyrotechnic device made of crackling microstars (video 4). these microstars have the following composition: Crackling Microstars Bismuth trioxide 75% Magnalium 15% Copper oxide 10% Aluminum 5% additional (for white sparks) Indicate the oxidation number of the metals in each compound, and indicate which compounds will act as oxidants and which will act as fuel