Alumimum
It's a Mexican myth that slicing a potatoe in half and putting it in water till the water turns white then putting the water on your hair makes it grow. It's worth a try!
Spoons can turn black in water due to a reaction between the metal and certain substances in the water. If the spoon is made of silver, it can tarnish when exposed to sulfides or other compounds in the water. Additionally, the presence of minerals or contaminants can lead to oxidation or the formation of black residues. This discoloration is usually harmless and can often be cleaned off.
cause you put it in cold water... so it makes it cold.
It will stay cooler or hotter depending on what it originally was.
Ice melting -putting a sheet of hot metal into cold water.
Metal turns into rust when exposed to oxygen and moisture over time, a process known as oxidation. The oxygen in the air reacts with the metal's atoms to form a new compound, which appears as reddish-brown iron oxide, or rust. This process can be sped up by increasing the metal's exposure to water and oxygen.
potassium in the banana reacts to water and melts the banana
I think it turns gray because thr water that avaperates in the water is dirty so the cloud gets dirt and it turns gray
Starch
when water passes thru a dam, it turns the turbine blades, the turbine blades turn a huge metal rod like stick and the rod turns and powers an generator.
the metal.
An asteroid is hunks of rock or metal a comet is ice and as it gets closer to the sun it turns to water vapor as it gets further it turns back to ice.