Yes water does expand when heated

Hot air balloons are a really common example, air expands making the balloon to float

Train tracks on a hot day: Metal tracks expand more than wooden ties, creating gaps to prevent buckling. Different materials expand differently!

per degree Celsius is the SI unit, The coefficient of linear expansion may be defined as the increase in length per unit length when the temperature is raised by 1°C

 It hardly expands and won't crack, unlike regular glass, making it perfect for hot ovens and cold fridges. Plus, it's easy to clean and doesn't absorb flavors.