what is the difference between glass and crystal?

Answer 1

GLASS:
Glass is a uniform material of arguable phase, usually produced when the viscous molten material cools very rapidly to below its glass transition temperature, without sufficient time for a regular crystal lattice to form. The most familiar form of glass is the silica-based material used for household objects such as light bulbs and windows.

Glass is a biologically inactive material that can be formed into smooth and impervious surfaces. When in tension, glass is brittle and will break into sharp shards. When in compression, pure glass can withstand a great amount of force. The properties of glass can be modified or changed with the addition of other compounds or heat treatment.


CRYSTAL
Which crystal structure the fluid will form depends on the chemistry of the fluid, the conditions under which it is being solidified, and also on the ambient pressure. The process of forming a crystalline structure is often referred to as crystallization.

While the cooling process usually results in the generation of a crystalline material, under certain conditions, the fluid may be frozen in a noncrystalline state. In most cases, this involves cooling the fluid so rapidly that atoms cannot travel to their lattice sites before they lose mobility. A noncrystalline material, which has no long-range order, is called an amorphous, vitreous, or glassy material. It is also often referred to as an amorphous solid, although there are distinct differences between solids and glasses: most notably, the process of forming a glass does not release the latent heat of fusion. For this reason, many scientists consider glassy materials to be viscous liquids rather than solids.

Answer 2

Glass is a uniform material of arguable phase, usually produced when the viscous molten material cools very rapidly to below its glass transition temperature, without sufficient time for a regular crystal lattice to form. The most familiar form of glass is the silica-based material used for household objects such as light bulbs and windows. Glass is a biologically inactive material that can be formed into smooth and impervious surfaces. When in tension, glass is brittle and will break into sharp shards. When in compression, pure glass can withstand a great amount of force. The properties of glass can be modified or changed with the addition of other compounds or heat treatment.

Crystals come from the earths crust. Crystal is the perfect example of what we called the organized behavior of nature. The atomic structure of crystal is highly organized and that made it so very beautiful. It is a colorless mass made of silica with highly organized internal structure and a plane surface outside.

Crystal can have various uses. We can use it in glassware and in ancient times people used it as a medicine also. It was believed to have supernatural powers. In some societies, during ancient times, people use it as the center of all human energy and concentrating on a crystal they used to tell the physical state of a person’s health. As a jewellry its functions are dual; it is as beautiful as diamond and supposed to emanate positive energy that has a positive effect on the person who meets.

Answer 3

I presume you mean something like window glass versus a crystal like salt or sugar. Both are obviously solids, that is why the question makes sense. But there is a big difference. In crystals, the particles (like sugar molecules) are arranged in orderly arrays (lattice positions) in every direction. That is because when new molecules arrive and become part of the crystal (crystal growth) they prefer certain fixed orientations and positions, because they are the lowest energy states for them. By contrast, glass is what we call amorphous, the molecules are arranged randomly like in a liquid. In fact, glass is a 'supercooled' liquid, even though it seems to be a solid. They are formed by the molten glass cooling, but the molecules just end up anywhere. Given enough time they will rearrange themselves to the crystalline state, but that can be very slow indeed. Some stained glass windows in churches are hundreds of years old and have not changed noticably. Maybe given a million years they might. Or you can speed it up by heating to a bit below the melting point to assist the molecules in moving about or turning round. I hope this helps.

Answer 4

Lead Crystal is glass with lead content, and can contain as much as 33% lead. Before one did not know that storing alcohol in lead crystal will dissolve the lead from the glass and poison the liquid. When using alcohol in crystal glasses was after use, and don't let it sit there for more than the evening they are in use.

Englishman George Ravenscroft discovered crystal in 1676

Answer 5

Glass is a 'supercooled' liquid. It does not have a crystal structure.
Crystal is a solid. The atoms within the crystal are in an ordered and regular structure.

Answer 6

Crystal Glass is ordinary glass with lead oxide added (up tp 33%) this makes it extremely sparkly and easier to cut as the glass is softer and less brittle. Therefore it can be cut into facets that sparkle whereas ordinary glass is too brittle and would crack

Answer 7

lets use silicon as an example:
glass is made of silicon dioxide and so is quartz . the difference is their atomic structure. quartz has a definite, regular atomic structure, that looks like a squashed box or cube. the atomic structure of glass is alot more random with little or no regular structure. break a piece if quartz and it breaks with smooth faces while glass breaks into random shaped, sharp pieces.

Answer 8

crystal has lead content

Answer 9

its the lead content. increases the quality and gives it that 'ching' sound.