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The Molecular Model Set For Water Water's various chemical and physical properties are determined by the three dimensional shape of the water molecule.Students explore the attractions between water molecules that are responsible for creating surface tension. Electrical forces between the water molecules are simulated with six magnets. The white hydrogen atom of one water molecule is attracted to the red oxygen atoms on the other water molecule. Color and size of foam fish may vary.
US buyers - The weight limit for USPS First Class Mail is 13 oz. If you are purchasing more than 2 model sets, we will ship using USPS Priority Mail. International buyers - USPS small flat rate shipping does not have a tracking number and is NOT insured. Only 2 model sets will fit in the small flat rate box. The customs number can be used to determine that the package has reached your country. You become responsible for the package once it has reached your country. We cannot guarantee shipping within your country. If you would like your package insured, please select USPS Priority Mail International. If you order more than 2 model sets you must choose to ship by USPS Priority Mail International. USPS Priority Mail International does not have a tracking number but it is insured. |
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