chemistry revision

• What is the particle model used to describe?

  The particle model is used to describe the behavior of matter.
• What does atomic structure refer to?

  Atomic structure refers to the arrangement of protons, neutrons, and electrons in an atom.
• How do chemical reactions relate to atomic structure?

  Chemical reactions involve the rearrangement of atoms in different combinations.
• What is the purpose of the periodic table?

  The periodic table organizes elements based on their atomic number and properties.
• What are the main components of atomic structure?

  • Protons (positively charged)
  • Neutrons (neutral)
  • Electrons (negatively charged)
  • Nucleus (contains protons and neutrons)
  • Electron cloud (region where electrons are found)
• What are the key features of the periodic table?

  • Elements arranged by increasing atomic number
  • Groups (columns) indicate similar chemical properties
  • Periods (rows) indicate energy levels of electrons
  • Metals, nonmetals, and metalloids are categorized