Elements, Compounds and Mixtures

• Elements

  Substance made of 1 type of atoms only
• Compounds


  Substances bonded together chemically
• Chemical symbols are in the simplest ratio of abundance (e.g., Mg:O)
• Elements combine to form a compound (Mg²+O²-)
• Compound

  Consists of 2 or more elements chemically bonded
• Elements in a compound have fixed proportions
• Decomposition

  Compound will be chemically separated using electrolysis, redox reaction, and thermal decomposition
• Mixtures

  Contains 2 or more substances put together
• Chemical symbols represent elements (e.g., Co: Cobalt, C: Carbon, Ca: Calcium, Cu: Copper, Cl: Chlorine)