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Molecular Model Kit (501 Pcs) Explore The Fascinating World Of Chemistry Pe Power Tool Parts & Accessories Dual-Density Craft: The New TechnologyDetailed Set: Our Chemistry Molecular Model Kit Includes 501 Pieces, An 8 Page Learning Guide, And A Chemical Plane Drawing Aid. The Set Features 160 Atoms, 190 Chemical Bonds, A Mini Carbon 60 Model Set With 60 Atoms And 90 Chemical Bonds, And A Disconnector Tool. Chemistry Learning Assistance: The Learning Guide Allows You To Quickly Create Your Own Chemistry Molecular Structure Model, From 9Th Grade To Postgraduate, From Organic To Inorganic. The