* Evaporation is the process where liquid water changes into water vapor, which is the gaseous state of water.

* Water vapor is still water, but it's in a different form. It's invisible and mixes with the air.

Think of it like this:

* Ice is the solid form of water.

* Liquid water is the liquid form of water.

* Water vapor is the gaseous form of water.

So, while evaporation changes water from liquid to gas, it doesn't change what the substance *is*. It's still water, just in a different state.