You have been given water in a dropping bottle, a hand lens, and several different materials used on the outside of buildings.

Notice any differences between the materials and use these observations to suggest what would happen to a drop of water on a chimney pot.

a) Place a drop of water on each material in turn and watch carefully.

Write down what happens to the drop of water:

Plastic  _______________________________________________________________

Painted wood  __________________________________________________________

Brick  _________________________________________________________________

Metal  _________________________________________________________________

Roof tile  _____________________________________________________________

Glass  _________________________________________________________________

b) Use your hand lens to look at the surface of each material.

Now look at the surface of the piece of chimney pot in the bag.

Do not take it out of the bag.

Say what you think would happen to a drop of water placed on the piece of chimney pot:

_________________________________________________________________________________

_________________________________________________________________________________

_________________________________________________________________________________