The addition or removal of heat energy.
a physical one because the water only changes it state of matter or its form so its physical
It is a physical change because the water only changes its state from liquid to gas.
When water changes to water vapor, it has changed its state from liquid to vapor and no chemical change has taken place. It's only a physical change.
No, the conversion of liquid water into gaseous water is a physical change, not a chemical change. This process, known as evaporation, involves only a change in the physical state of the water molecule, not its chemical composition.
physical change because you are not doing anything to the object to change its ingredients or the way it is constructed and all you are really doing is adding heat.
The only changes of state in pure boiling water is from liquid to gas.
Melting ice into water and breaking a glass bottle are examples of physical changes. These changes do not alter the chemical composition of the substances involved, only their physical state or appearance.
Boiling water will not remove minerals from it. Minerals are dissolved in water and boiling only changes the physical state of the water, not its mineral content.
because during a water cycle only the state of the water molecules are changed i.e. first from liquid to vapour and then to solid (snow and hailstorm) or liquid (rain). since there is a change only in the physical state of water and there is no change in the chemical properties of the water molecule it is a physical change.
An example of purely physical changes includes the melting of ice into water. During this process, the ice changes its state from solid to liquid, but its chemical composition (H₂O) remains the same. Other examples include boiling water, dissolving sugar in water, or breaking a glass. In these cases, no new substances are formed; only the form or state of the material changes.
A physical change in contrast to a chemical change is one in which the chemical structure of the compounds involved are left unchanged. Only a physical change occurs. One such example is boiling water. This changes the physical state of water from a liquid to a gas. Similarly, freezing water is a physical reaction. In this case, liquid is frozen to form a solid.
Chemically, nothing changes about water when it changes state. The physical state changes when water freezes into ice or evaporates into steam.