======Make Molecular Models====== **Materials: **{{$demo.materials_description}}\\ **Difficulty: **{{$demo.difficulty_description}}\\ **Safety: **{{$demo.safety_description}}\\ \\ **Categories:** {{$demo.categories}} \\ **Alternative titles:** ====Summary==== {{$demo.summary}} ====Procedure==== *Use a modelling kit to make various molecular compounds including basic inorganic compounds, organic compounds, and various hydrdocarbons (to investigate formula). ====Links==== 3D Molecular Model Building Activity - Julian Buss: {{youtube>_892JajgciY?}}\\ 3D Molecular Models Lab Tutorial - Stephen Stilianos: {{youtube>vEqjUkD3xbU?}}\\ ====Variations==== *Use lollies/candies or plasticine and toothpicks as a substitute for molecular models. ====Safety Precautions==== *No specific safety precautions required. ====Questions to Consider==== * How does VSEPR theory help predict the shapes of molecules? * Why are bond angles not always exact multiples of 90° or 120°? * What is the difference between a structural isomer and a stereoisomer? * How do lone pairs influence molecular geometry and polarity? * How can molecular models help explain macroscopic properties like boiling point and solubility? * Why is it important to visualize molecules in 3D instead of relying only on 2D structural formulas?