Compounds, Molecules and Mixtures

• What is a compound ?

  Substance made up of two or more different elements ( where the atoms are in fixed proportions ) chemically bonded together.
• Do compounds have the same properties as the atom they are made from ?

  No.
• What is a mixture ?

  A combination of two or more substances that are not chemically bonded.
• What is a molecule ?

  Substance that contains 2 or more atoms held together by chemical bond.
• Is NaCl a compound or an element ?

  Compound
• Difference between an element and a compound

  An element is one type of atom , a compound is multiple types of elements or atoms
• Is 2Al a compound or an element ?

  Element ; only 1 type of element !
• Boron, Carbon And Oxygen are examples of…

  Elements /Atoms
• What is an atom ?

  The basic unit of matter.
• Air and Saltwater are examples of…

  Mixtures