Chemistry 12 Textbook Cover - Professional AI-Generated Design

> Professional modern chemistry textbook cover, titled "Chemistry 12" at the top (Times New Roman), author "Hadi Buazar" at the bottom, and Telegram ID "@ChemTimeBuazar" with Telegram icon, all text in Times New Roman. Background: plain black with small white star-like dots (not galaxy). Central visuals: realistic, balanced arrangement of Grade 12 chemistry concepts: • Ball-and-stick model of unsaturated fatty acids (cis/trans isomers), • Molecular structure of soap/detergent micelle (carboxylate head with hydrophobic tails), • Diagram of galvanized iron (Zn protecting Fe, corrosion process), • Diamond covalent lattice structure (3D crystal network), • Detailed scientific illustration of heterogeneous catalyst surface with adsorbed molecules (as shown in page 98 of Chemistry 12 textbook). Style: clean, realistic 3D academic illustration, sharp, high-resolution, print-ready, arranged in a professional composition. Colors: academic palette (blue, green, white, orange, metallic gray for Fe/Zn). Negative prompt: no cartoonish icons, no random extra elements, no blur, no watermark, no clutter, no galaxy background, no low-quality render. Use Catalytic converter in chemistry and Unsaturated fatty acids picture