What causes the milky white in ice?

Answer 1

Here is the answer:

The center of an ice cube is white because it is full of bubbles
and other defects like cracks and boundaries between ice crystals. Cold water, from the faucet or in an ice tray, will freeze cloudily. Warm water, from the faucet or in an ice tray, will freeze clear. I have no clue why. I tried it one day and it worked. They are found in the center more than at the surfaces because the the water freezes from the outside in, and at a fairly slow rate.

This allows the outer ice to solidify with fewer cracks and defects than
the later ice. Hard water contains minerals like calcium that condense when frozen, which will cloud up ice cubes. As water freezes, dissolved air is forced out as a gas, which forms bubbles. These bubbles are trapped in the ice, making it look opaque.

One additional item: ice and ice cubes can be made clear using the right water (clean and not aerated) and the right rate of freeze. If you have ever seen a nice ice sculpture, you know big blocks of ice can be pretty clear, but they usually dont' stay that way.

--matt

Answer 2

Milk and cream, which are the main ingredients in Ice cream are naturally white- so the ice cream is white. The color changes based on flavors and colors added to it.

Answer 3

In fact ice has no color like water. When water converting into solidity at 0oC forms ice,it absorbs color of light,for which it looks like white.

Answer 4

Air trapped in the ice