2MgO(s). Circle the
In your lab, you burnt a strip of magnesium. The chemical reaction is 2Mg(s) + O2(g) – 2MgO(s). Circle the
statement(s) that is/are TRUE about this reaction.
a. A bright light is produced that indicates the reaction is a chemical change.
b. Bubbles were produced that indicates the reaction is a chemical change.
c. The reaction is exothermic because energy is released in the form of light.
d. The Law of Mass Conservation for this reaction is violated (not true) for this reaction, because the product (MgO) weighs more than the original strip of magnesium.