PURE VS. MIXTURE

• What are the types of a pure substance?

  Elements and compounds
• PURE SUBSTANCE

  • homogeneous and pure kind of matter
  • homogeneous matter have identical properties throughout
  • all its parts are alike
• Can you give examples of PURE SUBSTANCE?

  Salt

  Sugar

  Water

  Elements
• MIXTURE

  • combination of 2 or more pure substances that are not chemically combined
  • substances held together by physical forces, not chemical
  • no chemical change takes places
  • can be separated physically, the substances keep their separate identities and most of their own property
• What are the types of MIXTURE?

  Homogeneous, Heterogeneous
• How can we separate a MIXTURE?

  • through physical processes like evaporation and filtration
  • NOTE: a substance in a mixture can be recovered without destroying its properties