What happens to the density of water when it freezes to become ice?

Density of water decreases when it becomes ice.

Explanation:

Density of a quantity that relates a mass to the volume it occupies , this tells us that there is an inverse relationship between density and volume: as the volume that a mass occupies increases, its density decreases.

The density of water when moving from a liquid state to a solid (frozen) state decreases, because solid water occupies a larger volume.

And because objects with a lower density than liquid water tend to float, this is why ice cubes float.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.