Crystal Lattices And Unit Cells
Chapter Name : The Solid State |
Sub Topic Code : 102_12_01_05_01 |
Topic Name : Crystal Lattices And Unit Cells |
|
Sub Topic Name : Introduction |
|
Introduction
The arrangement of atoms / molecules / ions in a crystal
Pre-Requisites:
Types of solids
Activity:
All properties of any solid are directly dependent on its structure Find out the 14 bravais structures
Real Life Question:
“How are the atoms in every solid around us arranged?”
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Crystal lattice Unit cell Lattice point | a regular 3 –D arrangement of points in space a unit cell is the smallest portion of a crystal lattice Each point in a lattice is called LATTICE POINT or LATTICE SITE. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Find out the 14 bravais lattice | Try and memorize them |
Practical examples around us
| Examples | Explainations |
|---|---|
| salt Pencil lead | Cubic crystal Hexagonal |
What you learn in Theory:
Crystal lattices
What you learn in Practice:
All molecules have a definite unique structure