 Aluminum foil is cut in half.  Milk goes sour.  Clay is molded into a new shape.  Jewelry tarnishes.  Water evaporates from the surface of the ocean.  Rust forms on a nail left outside.  Rubbing alcohol evaporates on your hand.  Hydrogen peroxide bubbles in a cut  Your body digests food.

 Read the following story carefully. Then determine the correct order for the sentences. Be aware that the order has been mixed up!  I got out bread, peanut butter, and jelly.  I ate the sandwich.  I put the two pieces of bread together.  I spread a layer of jelly on another piece of bread.  I was hungry.  I spread a layer of peanut butter on a piece bread.

 Take notes…even if you’re not the recorder!  Some of the solutions are corrosive (cause severe burns)  Goggles on at all times  DO NOT CROSS CONTAMINATE YOUR SAMPLES (Do not use the pipettes to stir)  Dry temperature probes, stirring rods between reactions

 What do we know about Mg? Metal or Nonmetal?  How many valence electrons?  What group is it in? How reactive is it likely to be?  Recording initial and final temperature

 What type of reaction is this likely to be?  Recording initial and final temperature

 What type of reaction is this likely to be?  Record initial and final temperature  As temperature changes how is energy flowing to the thermometer?  If energy is release to the surroundings will you see an increase or decrease in temperature?  If the reaction needs energy from the surroundings will you see an increase or decrease in temperature?