Q:

What is nucleation?

A:

Quick Answer

Nucleation is the process that enables the formation of crystals. Crystals may arise from solutions, liquids or vapors but must undergo the process of nucleation to do so. Essentially, nucleation is to crystals what metamorphosis is to insects.

Know More

Full Answer

Nucleation begins with the line up and arrangement of crystal particles. These particles include ions, atoms and molecules, which are established in patterns to enable the conversion to solids. Processes of nucleation may be homogenous or heterogeneous in nature. Heterogeneous nucleation involves the surface of a substance, such as a particle of dust or container wall, which acts as the central location for the orientation of atoms, molecules or ions. The process of homogenous nucleation is much less formal. During this transition, several particles move into their correct positions through random movements. Of the two, heterogeneous nucleation is more common. However, homogenous nucleation is necessitated when the extent of super saturation or super cooling increases. The substances created by nucleation vary widely in color, shape and physical structure. Some may crystallize under stable and predictable conditions, while others undergo transformations in chaotic and volatile environments. Glycerol is one end product of nucleation; this component, like others formed in stable conditions, is prone to super cooling.

Learn more about Cells
Sources:

Related Questions

  • Q:

    How does a tetrad form in prophase 1 of meiosis?

    A:

    Tetrads, also known as bivalents, form during the prophase 1 stage of meiosis when duplicated chromosomes, each composed of two identical chromatids, pair up and complete the process of crossing over in which one chromosome exchanges corresponding segments of genetic material with the other chromosome in the tetrad. This exchange of physical parts and genetic information creates a tight grouping of the two chromosomes, each consisting of two sister chromatids.

    Full Answer >
    Filed Under:
  • Q:

    What forms around the chromatids during mitosis?

    A:

    During mitosis, new nuclear membranes form around the chromatids that were split during the anaphase stage of the process. The nuclear membrane of the original nucleus dissolves during the earlier prophase stage of the mitosis.

    Full Answer >
    Filed Under:
  • Q:

    What is mitosis of the skin?

    A:

    Skin mitosis is the process by which skin cells divide, creating new skin cells for wound repair and skin renewal. Unlike in other types of cells, mitosis occurs constantly in healthy skin cells, according to NCBI.

    Full Answer >
    Filed Under:
  • Q:

    Why can't a damaged cell in the brain be replaced?

    A:

    Damaged human brain cells do not regenerate because the process that creates brain cells, neurogenesis, ceases before birth for many brain structures and in all but one brain structure by age two, according to BrainFacts.org. Brain cells only regenerate in the hippocampus.

    Full Answer >
    Filed Under:

Explore