Atoms, Elements, Compounds and Mixtures

• How many types of atoms are there?

  118
• What are elements?

  Substances made of only one type of atom.
• How many of the elements are metals?

  80 percent.
• What are the properties of metals?

  Shiny, Flexible, Conduct heat and electricty, Solid at room temperature
• What are molecules?

  Atoms that are chemically bonded togethor.
• What is a compound?

  A substance made of more than one type of atom.
• What is a mixture?

  Made of more than one type of atom, but not chemically bonded together.
• How can a mixture be seperated?

  Using physical techniques.
• Reduce..

  use less of something.
• Reuse..

  use something again for the same purpose.
• Recycle..

  convert waste materials into useful new products.