Science Quiz: Properties of Water

Attraction between water and a different substance

Adhesion

Occurs in plants. Helps deliver water to all parts of plants. Result of adhesion and surface tension

Capillary Action

Attraction between two water molecules

Cohesion

Mass per unit volume. The density of water is 1 g/ml. Ice floats on water because it is less dense than water

Density

Because the H2O molecules attach to the Na and Cl molecules.

Describe in detail why salt dissolves in water.

Holds the surface together, so the whole liquid moves upward

Surface tension

Surface tension is often described as "skin" because the hydrogen molecules form a thin layer at the surface of water.

Surface tension is often described as "skin" on the surface of water. Why is it described this way?

Capillary action the result of adhesion and surface tension and helps deliver water to all parts of the plant. It occurs in plants.

What is capillary action? Why does it occur?

The structure of the H2O molecule when it attaches to other H2O molecules.

What physical properties of water cause it to be such a good solvent?

The molecules at the surface of water exhibit a stronger attraction inwards compared to those not at the surface because they are more strongly held by molecules. (surface tension)

Why do the molecules at the surface of water exhibit a stronger attraction inwards compared to those not at the surface?

It is able to dissolve a wide variety of materials.

Why is water called the "universal solvent"? Why is this important for living things?

The force of attraction between water molecules

Hydrogen Bond

Electrons are transferred from 1 to the other

Ionic bond

When electrons are not shared equally in a covalent bond

Polar Covalent

Being dissolved

Solute

Solute and a solvent combined

Solution

Doing the dissolving

Solvent