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Periodic Table: Classifications definitions

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  • Metals
    Largest group on the periodic table, known for luster, good conductivity, opacity, and malleability.
  • Nonmetals
    Elements with dull appearance, poor conductivity, possible transparency, and brittleness.
  • Metalloids
    Elements with properties of both metals and nonmetals, found along a staircase on the periodic table.
  • Luster
    A shiny appearance, especially noticeable in metals due to their reflective surfaces.
  • Conductivity
    Ability to allow electricity to flow, high in metals and low in nonmetals.
  • Opacity
    Quality of not allowing light to pass through; metals are typically not see-through.
  • Malleability
    Capacity to be hammered into thin sheets without breaking, a hallmark of metals.
  • Brittleness
    Tendency to break or crumble when hammered, common in nonmetals.
  • Staircase
    Imaginary dividing line on the periodic table where metalloids are located.
  • Semiconductor
    Material with electrical conductivity between metals and nonmetals, typical of metalloids like silicon.
  • Silicon
    A metalloid crucial for technology, especially in computer chips and electronics.
  • Periodic Table
    Organizational chart of elements, grouped by properties into metals, nonmetals, and metalloids.
  • Classification
    Grouping of elements based on shared physical and chemical properties.
  • Transparency
    Ability to allow light to pass through; some nonmetals exhibit this property.