crazy crystals 3

AIM: TO LOOK AT THE 7 DIFFERENT TYPES OF CRYSTALS

The 7 types of crystals

Type	Number of sides	Image
Triclinic Definition: denoting a crystal system or three-dimensional geometrical arrangement having three unequal oblique axes.	7
Monoclinic Definition: denoting a crystal system or three-dimensional geometrical arrangement having three unequal axes of which one is at right angles to the other two.	10
Orthombic Definition: denoting a crystal system or three-dimensional geometrical arrangement having three unequal axes at right angles.	6
Trigonal Definition: denoting a crystal system or three-dimensional geometrical arrangement having three equal axes separated by equal angles that are not right angles.	10
Hexagonal Definition: denoting a crystal system or three-dimensional geometrical arrangement having three axes of equal length separated by 60° and a fourth axis of a different length at right angles to these. "a hexagonal close-packed crystal structure"	8
Cubic Definition: a cubic equation, or a curve described by one.	6
Tetragonal Definition: denoting a crystal system or three-dimensional geometrical arrangement having three axes at right angles, two of them equal.	12

Explain how the following crystals are formed?

Type
Salt	As the water evaporates from the solution, the Na and Cl atoms begin to bond together, first as single molecules and then the molecules bond together, forming crystals.
Sugar	Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal.
Snowflakes	A snowflake begins to form when an extremely cold water droplet freezes onto a pollen or dust particle in the sky. This creates an ice crystal. As the ice crystal falls to the ground, water vapour freezes onto the primary crystal