I do need immediate answers, this is taking a bit of time for me to figure out a shiny silver spoon became dull and black over time. What most likely happened to the spoon?

A. The metal mixture began to separate

B. The metal reacted with air to form a new substance

C. Dirt collected on the shiny metal

D. The metal dissolved into a black tarnish

Chemical because water + metal = rust. ... Chemical because carbon dioxide gas was produced - bubbles. You take out your best silver spoons and notice they are very dull and have some black spots. Chemical because the color change is tarnish.

Explanation:

:)

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.

i think tornado but not 100%