Substances and Mixtures

• definite and unchanging chemical composition

  pure substances
• combination of two or more pure substances that are physically combined


  mixture
• there are two types of mixtures which are?

  homogeneous and heterogeneous
• it is a combination of two or more substances that are so intimately mixed that the mixture behaves as a single substance

  homogeneous
• also called as solutions


  homogeneous
• it's composition is not uniform

  heterogeneous