Properties of Water

Water is "sticky" because...

• of cohesion.

• of adhesion.

• of the attraction between the positively charged hydrogen atoms and the negatively charged oxygen atom.

• of capillary action.

Why is water called the universal solvent?

• It is polar.

• It exist in the universe.

• It dissolves many materials.

• It has oxygen and hydrogen.

What is the only natural substance on Earth found in the liquid, solid, and gas states?

• water
• oxygen
• hydrogen
• metal

Which two of the same atoms make-up a molecule of water?

• 2 hydrogen
• 2 oxygen
• 2 carbons
• 2 nitrogen

The hydrogen atoms in a water molecule are ________________ charged.

• not

• negatively

• neutrally

• positively

Why does ice float on liquid water?

• Ice does not float on liquid water.

• It has a higher density than liquid water.

• It floats because it has lower density than liquid water.

• adhesion and cohesion

Why does water have a high specific heat index?

• It requires a great amount of energy for water to become hot. 
• It takes water little energy to get hot.
• Water changes temperature very easily. 
• Water warms up fast when heated by the sun. 

When water molecules stick to each other because of the polar attraction between hydrogen and oxygen atoms, it is called ______________.

• adhesion

• cohesion

• specific heat index

• properties of water

When water molecules stick to other materials it is called _____________.

• adhesion

• cohesion

• capillary action

• surface tension

When water molecules stick together and create a trampoline like surface, it is called ___________________. 

• surface tension
• capillary action
• adhesion
• cohesion