Justine observed that the water level in a dish placed on the window sill decreased after a few days, and vapor formed. What best explains that she observed a physical change?
Vapor can be easily condensed back to form water.
Water and its vapor react with substances in different ways.
The molecular composition of water changed when the water level decreased.
Bonds between hydrogen and oxygen broke when the water level changed.
1 answer
Vapor can be easily condensed back to form water.
13 answers