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  • Floating ice in sea.
    Rights: Dr Megan Balks Published 30 June 2010 Size: 170 KB Referencing Hub media

    Water density changes with temperature and salinity. When water freezes at 0°C, a rigid open lattice (like a web) of hydrogen-bonded molecules is formed. It is this open structure that makes ice less dense than liquid water. This is why icebergs float.

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