Limewater turns from 'colourless' to 'cloudy/milky' when Carbon Dioxide is present.
Its a physical changed also know as condensation.
A water wheel turning converts the potential energy of flowing water into mechanical energy, which can then be used to drive machinery or generate electricity.
A phase change.
A physical change!
It is a physical change when water boils. See also related answers.
Water boiling is a phase change, which is a kind of physical change.
white water rafting
dissolving is a physical change
evaporation.
Evaporation is a physical process.
Boiling of water is a physical process, a change of phase.
a change of stateIce melting is a physical change