CHM-1020C Lecture Notes - Lecture 9: Lignin, Brain Death, Gunshot Residue
29 Aug 2016
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Document Summary
The physical properties of metals include shininess, malleability, ductility, and conductivity. A malleable material is one that can be hammered or rolled into at sheets and other shapes. A ductile material is one that can be pulled out, or drawn, into a long wire. The properties of malleability and ductility comes from the ability of the atoms in the metal to roll over each other into new positions without breaking the metallic bonds that hold them together. If a small stress is put onto the metal, the layers of atoms will start to roll over each other. If the stress is released again, they will fall back to their original positions. If you beat the metal harder, the layers remain in their new orientation. Metal atoms are arranged around each other into what is called a cubic cell. The nuclei are arranged into xed orientations while the electrons are free to ow around them.
