Select all the correct answers. what happens to water when it changes to ice? its density increases. its density decreases. its mass increases. its mass decreases. its volume increases. its volume decreases.

When water freezes, it's volume INcreases, which naturally results in a DEcrease in it's density. That's why cubes and bergs float.

I'm pretty sure that water is the only known substance that behaves this way. Which is lucky for us, because if it didn't, then life on Earth would be impossible. Oceans and lakes would freeze from the bottom up. Once! And then they would never thaw, because the sun could never cut through the layer of warm water on top, to melt the ice below.

multiply 2kg by latent heat of vap