Return to the investigation question:

How are ice and water the same and different?

Post a T-chart, or Venn Diagram, "Comparing Ice and Water" with the headings Same and Different. Start by asking students to identify differences between ice and water. As students share the observations they recorded in their Science Notebooks, add them to the class list. Some likely observations are shown below.

Comparing Ice and Water

Same
have weight take up space are matter feel wet can change temperature
Different
Ice	Water
solid holds a shape hard cold transparent in some parts but not always	liquid takes the shape of its container soft can be warm or cold transparent

Save the list of observations. Students will continue to investigate water-ice transformations and will add more observations to the list in Investigation 12.

Recap the investigation

The transformations of water from a liquid to a gas and the reverse are evaporation and condensation. The transformations of water, from a liquid to a solid and the reverse are freezing and melting.

One question for students to think about, and one they will discuss in a future class, is:

Your bottles of water are going in the freezer. Is water still the same material after it is frozen?