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  2. Crystal - Wikipedia

    en.wikipedia.org/wiki/Crystal

    In addition, the same atoms may be able to form noncrystalline phases. For example, water can also form amorphous ice, while SiO 2 can form both fused silica (an amorphous glass) and quartz (a crystal). Likewise, if a substance can form crystals, it can also form polycrystals. For pure chemical elements, polymorphism is referred to as allotropy.

  3. Crystal structure - Wikipedia

    en.wikipedia.org/wiki/Crystal_structure

    In crystallography, crystal structure is a description of ordered arrangement of atoms, ions, or molecules in a crystalline material. [1] Ordered structures occur from intrinsic nature of constituent particles to form symmetric patterns that repeat along the principal directions of three-dimensional space in matter.

  4. Crystallization - Wikipedia

    en.wikipedia.org/wiki/Crystallization

    The crystals are captured, stored, and sputter-coated with platinum at cryo-temperatures for imaging. The crystallization process appears to violate the second principle of thermodynamics. Whereas most processes that yield more orderly results are achieved by applying heat, crystals usually form at lower temperatures – especially by ...

  5. Quark - Wikipedia

    en.wikipedia.org/wiki/Quark

    A quark, which will have a single color value, can form a bound system with an antiquark carrying the corresponding anticolor. The result of two attracting quarks will be color neutrality: a quark with color charge ξ plus an antiquark with color charge − ξ will result in a color charge of 0 (or "white" color) and the formation of a meson .

  6. Atom - Wikipedia

    en.wikipedia.org/wiki/Atom

    This is a form of nuclear decay. Atoms can attach to one or more other atoms by chemical bonds to form chemical compounds such as molecules or crystals. The ability of atoms to attach and detach from each other is responsible for most of the physical changes observed in nature. Chemistry is the science that studies these changes.

  7. Atomic diffusion - Wikipedia

    en.wikipedia.org/wiki/Atomic_diffusion

    In chemical physics, atomic diffusion is a diffusion process whereby the random, thermally-activated movement of atoms in a solid results in the net transport of atoms. For example, helium atoms inside a balloon can diffuse through the wall of the balloon and escape, resulting in the balloon slowly deflating.

  8. State of matter - Wikipedia

    en.wikipedia.org/wiki/State_of_matter

    In a string-net liquid, atoms have apparently unstable arrangement, like a liquid, but are still consistent in overall pattern, like a solid. When in a normal solid state, the atoms of matter align themselves in a grid pattern, so that the spin of any electron is the opposite of the spin of all electrons touching it.

  9. Crystal growth - Wikipedia

    en.wikipedia.org/wiki/Crystal_growth

    A crystal is a solid material whose constituent atoms, molecules, or ions are arranged in an orderly repeating pattern extending in all three spatial dimensions. Crystal growth is a major stage of a crystallization process, and consists of the addition of new atoms, ions, or polymer strings into the characteristic arrangement of the crystalline ...

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