how did crystals come about? what are crystals good for?

Question

im 12 years old in 6th grade on the brinx of failing please help me ur girl love ya i love u boy

Answer 1

Crystals can grow in any concentrated solution of a chemical or compound.

The atoms in the solution start to attach themselves to other atoms of the same type and a tiny crystal starts to form.

It is a bit like a very big bath full of lego building bricks. The lego building bricks are all floating around in the water and gradually one brick sticks to another brick, then another and another. Over time a bigger and bigger structure starts to form.

As the atoms can only stick together in certain ways, the crystal grows in a certain shape - it might be as a cube (as in pyrites or galena crystals) or it could be long and thin (like an asbestos filament) or other special and unusual shapes.

You can grow crystals at home if you mix up a concentrated table salt or sugar solution and then dangle a string with a tiny crystal (which you made first by evaporating some of the solution in a saucer) attached to it, in the solution. A bigger crystal will grow on the end of the string. You can keep it going by adding more salt or sugar.

Crystals are very beautiful and are used for jewelry.
They also can be very strong and diamond is used in manufacturing for cutting metals.

Quartz crystals produce electricity when squeezed - a process that has been used in watches to keep regular time.

Some rocks are made up almost entirely of a mixture of cystals (e.g. Granite). This is a very hard substance and is used in the construction of buildings.

Answer 2

Crystals are the natural structure of some elements under specific temperatures and pressures.

For example, a diamond is carbon in a crystal form (it was created under very high temperatures and pressures).
Snowflakes and ice are also crystals (these form when water freezes).
Salt and sugar are also crystals, they form when the compounds that make them solidify (the water evaporates).

Its not that they are "good" for anything, but they are useful.
Salt and sugar are necessary for life.
Ice and snow is important to the environment (and are fun to play in).
Diamonds are beautiful when cut and polished.

There is a lot of technology that needs crystal structures to work (for example, liquid crystals are used in laptop screens, LCD watches, etc.)

Answer 3

Crystals of what? Salt? Pyrite? Quartz? Calcite?

Crystals have a set chemical formula and a highly regular atomic structure.

As for what they are good for, you have to be more specific about what crystal you are talking about.