Astudent records the mass of a piece of iron. the iron is then left outside until it rusts. what type of reaction occurs, and how does the mass of the object after rusting compare with its original mass?

Decomposition; The mass of the iron is grater

Explanation:

The Iron combines with Oxygen to form Rust ( Iron Oxide) This is an Oxidation reaction. It is also an Oxidation Reduction reaction. The Iron Oxide has more mass than the original Iron.

yes

no

blue is scattered more than other colors because it travels as shorter, smaller waves. this is why we see a blue sky most of the time.