Why Water Is Lost During Heating

[chiddler]

Homework Statement

It is observed that 55.50 mL of water at 20 degrees C completely fills a container to the brim. When the container and the water are heated to 60 degrees C, 0.34 g of water is lost. Density of water at 60 is 0.98324 g/mL.

I don't need help with solving it. I just need help understanding: why is water lost?

Thanks very much.

 

[PhaseShifter]

• What happens to the density of the water when you heat it?
• What happens to the volume?

 

[chiddler]

• What happens to the density of the water when you heat it?
• What happens to the volume?

Oh...it expands because density decreases.

Thanks for your help, really appreciated.