Compounds

• Different compounds

  • Combining different atoms creates different compounds. There are a lot of combinations that can be created.
  • A compound contains at least 2 different elements.
• Lego

  • Compounds are a bit like Lego.
  • Different combinations of bricks result in different models.
  • Similarly, different combinations of atoms result in different compounds.
• E.g. sodium oxide

  • Combining sodium (Na) atoms and oxygen (O) atoms gives sodium oxide.
  • We can represent this compound by combining the chemical symbols of the 2 elements (Na and O) to create the chemical formula Na2O.
• Atoms of different elements can be combined together to create compounds. Compounds have formulae that are made by combining the chemical symbols of the elements that combine to make them.
• Compounds are like Lego

  Atoms of different elements can be combined together to create compounds. There are a massive number of possible combinations of atoms.
• Lego

  • Different combinations of Lego bricks result in different models, just like different combinations of atoms result in different compounds.