The lysozyme structure, composed of 1,000 non-hydrogen atoms, contrasts with the model of sodium chloride composed of ... It catalyses a chemical reaction and has dynamic properties.

This helps to visualise the structure. A two-dimensional model for the ionic lattice in sodium chloride A 2D model shows the arrangement of one layer of ions but it does have a major additional ...

Elements bond in fixed ratios and so can be represented by a chemical formula. For example, sodium chloride has the same number of sodium ions and chloride ions, so its formula is NaCl ...