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In science, a crystal is a certain type of solid object. Scientists describe matter , or everything that can be seen, according to the way it is made. All matter is made up of tiny parts called atoms and molecules. If those parts are arranged in a regular pattern then the object is a crystal. On the outside crystals have a regular pattern of ...
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- Crystals
The scientific definition of a crystal is based on its...
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a piece of a certain substance that is made when the substance changes from a liquid to a solid. In becoming solid, as when water turns to ice, this type of substance takes on a structure that has a repeating pattern of flat surfaces. These flat surfaces reflect light and can make the substance sparkle when looked at from different directions. : glass of very high quality. : the clear cover on ...
The process of crystal forming is called crystallization. Crystals often form in nature when liquids cool and start to harden. 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. In nature, crystals can form when liquid rock, called magma, cools.
- Examples of Crystals
- Chemical Bonds in Crystals
- 7 Types of Crystal Lattices
- How Crystals Form
- What Is Not A Crystal?
- References
Crystals are familiar in everyday life. Examples of crystals include diamond (crystal carbon), salt (sodium chloride crystals), quartz (silicon dioxide crystals), and snowflakes (water ice crystals). Many gems are crystals, including emerald, citrine, ruby, and sapphire. Other materials look like crystals but don’t consist entirely of ordered latti...
One way to classify crystals is by the type of chemical bonds formed between their atoms or ions: 1. Covalent Crystals:Atoms in covalent crystals are linked by covalent bonds. Pure nonmetals form covalent crystals (e.g., diamond) as do covalent compounds (e.g., zinc sulfide). 2. Ionic Crystals: Electrostatic forces form ionic bonds between atoms wi...
Crystals can be classified according to their lattice structures. The lattice structures are also called space lattices. 1. Cubic or Isometric:This shape includes octahedrons and dodecahedrons as well as cubes. 2. Tetragonal:These crystals form prisms and double pyramids. The structure is like a cubic crystal, except one axis is longer than the oth...
Crystals grow via a process called crystallization. Basically, one particle bonds to another and so on until a structure forms. The beginning of the process is called nucleation. Most crystals people grow form from a liquid solution. As the solution cools or the liquid evaporates, the particles draw closer together. Eventually, chemical bonds form....
Despite the names, leaded crystal and crystal glass aren’t actually crystals. They are glass, which is an amorphous solid, that has been cut to resemble the sharp faces of crystals. Many gemstones are crystals, but not all of them. For example, turquoise is cryptocrystalline. This means it contains many tiny crystals, but is not crystalline overall...
Cressey, G.; Mercer, I.F. (1999). Crystals. London. Natural History Museum.Green, D.; Smithsonian Institution (2016). The Rock and Gem Book: And Other Treasures of the Natural World. DK Children. ISBN: 978-1465450708 .Pellant, Chris (2002). Smithsonian Handbooks: Rocks & Minerals. DK Smithsonian Handbook. ISBN: 978-0789491060.Feb 20, 2024 · Kids Encyclopedia Facts. A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, single crystals are usually identifiable by their geometrical shape, consisting of flat ...
Fun Facts About Crystals for Kids. Crystallography is the scientific study of crystals and their formation. Gemstones, like rubies, emeralds and sapphires, are crystals. The elements they are made up of determine their color. A unit cell is what they call the basic building block of a crystal.
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