Depends on the size and shape, but they all melt the same way
Yes, sugar cubes will melt when exposed to the intense heat of the sun. The heat will cause the sugar cubes to lose their shape and turn into a liquid form.
They melt because the heat in the air is warmer than the temperature of the ice cubes.
The Sun
If you put ice cubes in a bowl or whatever of hot water, the ice cube is sure to melt when put so says science.
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Salt cubes will also melt at temperatures of -38
Ice cubes don't faster in cold water because the temparature of cold water is low, ice cubes melt faster in high temparature.
Ice cubes melt faster in the sun because sunlight is a form of radiant energy that warms the ice cubes, causing them to absorb heat and melt more quickly. The higher temperature from the sun speeds up the rate of melting compared to ice cubes kept in the shade.
salt
heat.
under a light
Yes, salt water ice cubes melt more slowly than fresh water ice cubes because the addition of salt lowers the freezing point of water, requiring more energy to melt. This makes the salt water ice cubes colder and more resistant to melting.