The+Earth’s+Crust

==  Minerals are made of elements or mixtures of elements   Elements - pure substances – gold, silver, copper, zinc, etc.   (e.g. quartz is a mixture of silicon and oxygen) == ==  There are over 3000 different kinds of minerals  (and each one has its own unique set of properties).  We can use these differences to help identify them. ==

  Rock – a natural material made up of 2 or more minerals   e.g. – granite or conglomerate.

  With a partner, examine the rock (granite) that you were given at the start of class.     How many different colours can you see?     List the different colours you see.  