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MolE02 The smallest particles as building units of compounds

Left photo:You may use plastic beads to illustrate the sketch (photo 2) from the chemistry book Schuphan . Knappe, Chemie Buch Diesterweg. Sauerländer:
* Atoms of different  types fuse like softened beads of different colours and sizes.
* Ions with unlike charges (photos 3 and right) attract each other: In models beads of different colours and sizes can be combined to form bigger regular units.
Compounds made of two  non metals are made of molecules: H₂O, SO₂, CO₂, C₈H₁₈
Compounds made of metal and  non metal are made of  lattices: MgO, NaCl