Complex sentence: ZrW 2 O 8, or Zirconium Tungstate is a metal oxide with unusual properties, it has "negative thermal expansion" characteristics, in that it shrinks over a wide range of temperatures when heated.
Split into simpler sentences: ZrW 2 O 8, or Zirconium Tungstate is a metal oxide with unusual properties. It has "negative thermal expansion" characteristics, in that it shrinks over a wide range of temperatures when heated.