Physical vs. Chemical Change

PHYSICAL VS. CHEMICAL CHANGE 

Today in class Mr. Lieberman preformed an experiment demonstrating a change in magnesium. There are two types of possible changes that something can preform, physical and chemical. A physical change is when there is a  difference but the substance its self didn't change, it describes the nature of the substance you are looking at. An example would be a color change. Physical changes can be caused by melting point etc. In contrast a chemical change is when the substance is transformed into something else entirely. A chemical changes means that the atoms have been rearranged. The video below is the experiment that was preformed in class. This is an example of a chemical change,  magnesium becomes magnesium oxide, which makes it a completely different substance.

Magnesium-> Magnesium oxide 

This picture shows the results of the experiment we did in class, the solid straight metal piece is what we began with,the plain magnesium, after putting it through the flame the magnesium oxide was the result. Although this may appear a physical change because it looks different, it is a chemical change. This is because it is no longer magnesium but now magnesium oxide so it is a completely different substance. 







The next scribe will be.....
SHANA M.