The reaction, 4fe (s) + 3o2 (g) à 2 fe2o3 (s), is the rusting of iron. what occurs as the reaction proceeds? a precipitate is formed the color of the solid will change a new odor is given off the solution bubbles

the color of the solid will change

Explanation:

A chemical reaction is defined as the reaction in which a change in chemical composition takes place. A new substance is formed in these reactions.

Example: Oxidation of iron to ferric oxide is a chemical change.

Here iron which is grey in color changes first to green and then turns brownish red.

Characteristics of a chemical reaction:

1. change in color

2. heat is gained or lost

3. evolution of gas

4. formation of precipitate