Introductory Chemistry Set, Includes: Hydrogen/Carbon/Oxygen/Nitrogen/Sulfur/Phosphorus/Chlorine/Fluorine/Bromine/Iodine atoms, Gray links for single and double bonds, Contains 120 durable plastic, Economical model set used for General or Organic Chemistry course
Molecular Modelling set, Basic Inorganic and Organic Chemistry, Hard plastic case, Standard size, Consists of 54 balls of various colours and 24 links, 64 Pieces, Carbon-12, Hydrogen-24, Oxygen-6, Nitrogen-6, Chlorine-2, Sulphur-2, Bromine-1, Iodine-1
Organic Chemistry Model Set, Build thousands of organic molecules in their natural conformations and see the 3-D structure of the molecules, With 140 durable components in this model set, you can build bigger molecules without having to reuse model parts, Snap-closure
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