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:

:)

warm front forms when a moist, warm air mass slides up and over a cold air mass. as the warm air mass rises, it condenses into a broad area of clouds. a warm front brings gentle rain or light snow, followed by warmer, milder weather.

hope i !