This week we have been changing the state of water.
First we started with ice, water in a solid state.
We melted it in the sun.
We got water, this state is called liquid.
We heated the water to make it evaporate into steam, this is water in a gas state.
Then we condensated the steam (a gas) catching it with a cold lid , turning it back to water (a liquid).
We froze the water to make ice (a solid) once more.