Water Notes

Prediction Actual

Water has many characteristics that are essential to life and the maintenance of

Earth. Water covers about …

¾ of the surface of Earth

It is the only substance on Earth that is found in great quantities in

all three states….

Solid, liquid, and gas

• Many of the characteristics of water are due to the attraction water molecules have for one another. This was demonstrated in class by placing drops of water onto a penny. Many more drops than were predicted could be placed on the penny, and the pile of water grew quite high, because the attraction of water molecules for one another (cohesion) was strong enough to counter gravity.

Cohesion

The fact that pepper, needles and water-spiders can stay on the surface of water is

evidence of …

Surface tension

Which results in a skin-like characteristic to water’s surface. This phenomenon could

be reduced by adding detergent to the water

On a hot summer day, a shallow puddle of water is much cooler than a sheet of metal because water has an unusually

high …

Specific heat and will absorb a great deal of heat before its temperature will increase

July

December

Unlike most other substances, the solid form of water (ice is) ____ dense

Less dense than the liquid form, resulting in ice forming at the surface

of a body of water

In addition to all that, because water will dissolve so many substances, it is often referred to as the universal …

Solvent

Hydrogen Bonds

Water vs Ice