Essential Question: How is water unique?

Lesson 1: Water's Abilities

I can plan an investigation to demonstrate the ability of water to dissolve materials.

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Objective

Essential Question: How is water unique?

Lesson 2: Water's Properties

I can describe the properties of water and identify examples of cohesion, adhesion, and surface tension.

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Objective

The Water Molecule

Water molecules are made of the elements Hydrogen and Oxygen.

H₂O= 2 Hydrogen atoms and 1 Oxygen atom.

I wonder...

What would happen if I squeezed a sponge out in outerspace

Cohesion

Attraction between molecules of the same substance

Adhesion

An attraction between molecules of different substances

Adhesion Examples

1. Water drops holding onto plant leaves

2. Water attaching to a spider web

Surface Tension

• Cohesion creates a film on the surface of water. Surface tension is the strength of that film.

• It allows for insects to walk on the surface of water and causes "belly flops" to hurt.