contracts until a certain degree,about 4

degrees celsius.Then,it expands and the

volume of the solid,which is ice,increases.

So,why is ice denser?

It's actually quite simple.As long as the mass

stays constant,the density decreases as the

volume increases.Because its like the same

mass is being divided by a larger volume than

before and so of course the answer would have

decreased.

Will it be more painful to be hit by ice cubes or water.

Of course,it is ice cubes as they are 'harder' than water.

Water does not really if thrown at you unless with a great

force,while ice cubes will surely hurt you if thrown at you.

Will the water level change?Yes,it will increase as after the ice

melts,it becomes water and adds on to the volume of the water

so the volume increases.So,after the ice melts,the water level

would most likely be at A.