Sodium when placed in water explodes.
Sublimation is a physical change.
It is a physical change as
Dissolving sodium chloride in water is a physical change because the chemical composition of sodium chloride remains the same. The sodium and chloride ions are simply dispersed throughout the water, but they can still be recovered by evaporating the water.
Physical, because each slice of pellet is still the same chemically: you have merely divided your one sodium block into two blocks of sodium. If it were chemical, some kind of notable chemical difference would have occurred (you would no longer have sodium, but something else).
It explodes on contact with water.
Sodium is a shiny metal that explodes on contact with air or water due to its high reactivity with oxygen and water. When exposed to moisture or air, the sodium metal rapidly oxidizes, releasing hydrogen gas and heat in an explosive reaction.
When sodium melts, it undergoes a physical change. This is because the change in state from solid to liquid does not alter the chemical composition of the sodium itself. It remains as sodium in both the solid and liquid states.
Sodium is a chemical element, not a change.
if by deadly you mean it explodes when in contact with water, which most of your body is made up of, then yes.
It's a physical change
Slicing a pellet of sodium in half is a physical change because it does not alter the chemical composition of the sodium. The sodium is still sodium before and after slicing, just in smaller pieces.
Sodium when placed in water explodes.
It is only a physical change.
Sublimation is a physical change.
It is a physical change as
Dissolving sodium chloride in water is a physical change because the chemical composition of sodium chloride remains the same. The sodium and chloride ions are simply dispersed throughout the water, but they can still be recovered by evaporating the water.