Answer:
D) There is color change .
Explanation:
Magnesium in its metallic state is a very reactive compound because it can undergo a chemical reaction called a Combustion reaction.
A combustion reaction is a chemical reaction where a compound reacts with Oxygen in the atmosphere in the presence of heat to release water and to form an Oxide compound.
Combustion reaction also known as burning is a exothermic chemical reaction which means heat energy is always released.
When Magnesium in its metallic state reacts with oxygen in a combustion reaction, a colour change is observed. A white powder called Magnesium Oxide is formed and heat is released.
