Physical science

• Atom


  The smallest particles that all matter consists of
• Atom


  • Contains a nucleus
  • Contains electrons surrounding the nucleus
• Number of electrons surrounding a neutral atom

  Equals the number of protons found inside the nucleus
• There are 7 diatomic elements named H2, N2, O2, F2, Cl2, Br2, and I2
• Compound

  Consists of 2 or more atoms
• Molecule


  A combination of two or more different atoms
• Diatomic molecule


  Consisting of two of the same atoms
• Crystal lattice


  Atoms that are arranged in a regular or fixed pattern
• Compound name and formula

  eg H2O
• Periodic table


  • Provides information about the elements