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Stories in Stone
=Scientific Method=
 * //__Salt Expirement__//**

To tell the difference between rocks and minerals using the knowledge if it has a crystal structure.
 * Purpose-**

We predicted that the water on the metal and plastic spoons and the cups, will evaporate the solution of hot water and salt that we put in it will evaporate and leave salt crystals, or halite deposits. = =
 * Hypothesis-**
 * Materials-**

First, you stack up 4 cups into 2 groups, and pour 2/3 of a tablespoon of salt into the cup. Then, fill half the cup with boiling water and stir until the salt is dissolved. Then, tape one of the spoons on on side of the plate and tape the other one on the other side. Fill it up 3/4 or 1/2 of the cup with water.Add a pinch of salt. Wait one day, then observe what has become of the solution of the table salt and the hot water.
 * 8 cups (so the water won't leak)
 * 2 spoons (we used one metal and one plastic)
 * boiling water
 * table salt
 * stirrers
 * tape
 * a plastic plate
 * Procedure-**


 * Data/Observations-**
 * **//__metal spoon observations__//** || **//__plastic spoon observations__//** ||
 * has a crystal structure || has a crystal structure ||
 * has bigger crystals than plastic spoon || has smaller crystals than metal spoon ||
 * shaped into cubes || faded white color (transparent) ||

Our hypothesis was right, the solution that evaporated left salt crystals more informaly known as halite. We knew that it was a mineral becuase it was solid, and it had a cubed crystal structure.
 * CER-**

As you can see, the crystal halite is shaped like a cube, so its crystal structure is a cube. ( picture from [|http://www.chem.ox.ac.uk/icl/heyes/structure_of_solids/Scans/Halite(NaCl).JPG)]**
 * [[image:http://www.chem.ox.ac.uk/icl/heyes/structure_of_solids/Scans/Halite%28NaCl%29.JPG width="83" height="77"]]

Rock/min || Why || other minerals in it || hard || lots of different colors || rock || it has lots of other minerals in it || minerals in it || minerals combined || crystal structure || minerals in it || structure || mineral || it has a crystal structure || in it || in it ||
 * Rock Number || Properties || Prediction
 * 1 || rough,solid,shiny || mineral || because there are
 * 2 || rough,solid,shiny || rock || it's cleavage looks
 * 3 || split into cracks,shiny || mineral || it cracks easily ||
 * 4 || hard,solid,dull || mineral || it's hard ||
 * 5 || hard,solid,there are
 * 6 || hard,pointy,smooth || rock || it is hard to break ||
 * 7 || light,shiny,rough || mineral || it is very light ||
 * 8 || rough,hard,solid || rock || it has lots of
 * 9 || rough,hard,shells || rock || there are lots of
 * 10 || rough,hard,solid || rock || it does not have a
 * 11 || rough,hard,solid || rock || it has different
 * 12 || smooth,solid || rock || it is hard to break ||
 * 13 || rough,shiny,crystal
 * 14 || rocky,rough || rock || it has minerals
 * 15 || hard,rough,solid || rock || it has minerals
 * 16 || smooth,hard || rock || it is hard and solid ||