A violent reaction occur with release of hydrogen.
yes
Cold water generally has more dissolved gases than hot water. This is because gases are more soluble in colder temperatures compared to warmer temperatures. When water is heated, its capacity to hold dissolved gases decreases.
Somewhat, but it dissolves faster in warm water.
cause you put it in cold water... so it makes it cold.
choices are: The cold will flow from the metal into the hot water, causing the hot water to warm up and the metal to cool down. b. The energy from the hot water will flow into the cold metal, cooling the water down and heating up the metal. c. The cold will flow from the metal into the hot water, causing the hot water to cool down and the metal to warm up. d. The metal will cool down because the specific heat of water is high.
yes
it melts.
The metal gets cold, the water freezes over, and the ship gets stuck.
Sand is not soluble in any water. It can be suspended in water, but never dissolved.
Cold water is a mixture when it contains dissolved substances, such as salt or sugar, but it is considered a solution when those substances are uniformly distributed and not visibly separate from the water. Pure cold water itself, without any solutes, is simply a substance. In summary, whether cold water is a solution or a mixture depends on the presence of dissolved materials.
Solid chemicals are dissolved faster in hot water.
cold water is much heavier than hot water . the water becomes warm