It is a physical change. Water from the sweat becomes water vapour when it eveporates but these still comprise water molecules. You may be left with the dried salts which were present in the sweat (eg urea) but they will also be the same chemical compounds which were present i the sweat.
Physical Change
no
Evaporating a filtrate to dryness is a physical change because it involves the phase transition of a liquid (filtrate) to a gas (water vapor) without changing the chemical composition of the substance.
No, sweat evaporating from your forehead is a physical change, not a chemical change. The sweat is merely changing from a liquid state to a gas state without any change in its chemical composition.
Evaporation is considered to be a physical change. The chemical nature and identity of the evaporated material is the SAME as that of the liquid.
When salt water has evaporated, it has undergone a physical change since the salt and water both retain their chemical configuration, only have changed their form.
The water evaporated from the swimming pool. If your sweat evaporated quickly, you got cool faster.
Sweat evaporating is considered a physical change because it is a change in the state of matter from liquid (sweat) to gas (water vapor) without altering the chemical composition of the substances involved. The molecules in sweat retain their chemical identity during the process of evaporation.
It is chemical change... It is also physical change........Thats because the appearance also changed.Its a chemical change because when something is evaporated, these steps include chemicals.
No, the evaporation of sweat is a physical change, not a chemical change. Evaporation simply involves a change in state from liquid to gas, without any change in the chemical composition of the substance.
Evapration? Although the substance hasn't disappeared it has evaporated.
It would be both. It's a physical change because it is changing state and a chemical change because water is being evaporated.