Rutherford Model of the Atom Quiz

The number of neighbors (coordination) at the surface is less, resulting in unsaturated bonds and surface energy.

External surfaces, grain boundaries, twin boundaries, stacking faults, phase boundaries

Grain boundaries separate grains in crystalline solids, with a mismatch of orientation on either side. Low angle grain boundaries have slight misalignments (< 10°).

<p>Materials tend to minimize, if possible, the total surface area to reduce surface energy.</p> Signup and view all the answers

<p>Unsaturated bonds of surface atoms give rise to surface energy.</p> Signup and view all the answers

<p>They have slight misalignments on the order of few degrees (&lt; 10°).</p> Signup and view all the answers

<p>Tilt boundaries are formed by edge dislocations, while twist boundaries are formed by screw dislocations.</p> Signup and view all the answers

<p>Grain boundaries separate grains in crystalline solids and have a mismatch of orientation on either side.</p> Signup and view all the answers

<p>External surfaces can lead to lattice spacing relaxation or crystal structure reconstruction to reduce energy.</p> Signup and view all the answers

<p>It gives rise to meta-stable imperfections like external surfaces, grain boundaries, and other surface distortions.</p> Signup and view all the answers