Properties of Water

Open Ended

Why do you think water is considered extraordinary compared to other substances? (Use your macromolecule notes for help).

Multiple Choice

Which atoms make up a water molecule?

• Two oxygen and one hydrogen

• One oxygen and two hydrogen

• Three hydrogen

• One hydrogen and two oxygen

Multiple Choice

Which end of a water molecule acts negative and which end acts positive?

• Oxygen acts negative, Hydrogen acts positive

• Hydrogen acts negative, Oxygen acts positive

• Both ends act positive

• Both ends act negative

Multiple Choice

What is the main force that holds water molecules together?

• Hydrogen bonds

• Covalent bonds

• Ionic bonds

• Metallic bonds

Fill in the Blank

At what temperature does pure water boil at sea level?

Multiple Select

Which of the following are properties of water? (Choose all that apply)

• Cohesion

• Adhesion

• High Specific Heat

• High Heat of Vaporization

Open Ended

Explain how cohesion and surface tension are related and provide an example from nature.

Fill in the Blank

The process by which water molecules are attracted to the walls of a thin tube is called ___ action.

Multiple Select

Which of the following are examples of adhesion? (Choose all that apply)

• Water forming droplets on plant leaves

• Water molecules sticking to glass

• Insects walking on water

• Water attaching to a spider web

Multiple Choice

What property of water allows insects to walk on its surface?

• Cohesion

• Adhesion

• High specific heat

• Evaporation

Multiple Choice

What is the main reason water has a high specific heat?

• It forms hydrogen bonds

• It is a good solvent

• It evaporates easily

• It is less dense than ice

Multiple Choice

What must happen to hydrogen bonds in order for water to evaporate?

• They must be broken

• They must be formed

• They must be strengthened

• They must be cooled

Multiple Choice

Which of the following statements about water vapor's role in Earth's temperature is correct?

• Water vapor absorbs and holds heat radiated from the sun.

• Water vapor cools the Earth by reflecting sunlight away.

• Water vapor has no effect on Earth's temperature.

• Water vapor only forms at night.

Fill in the Blank

Ice is ___ dense than liquid water.

Multiple Choice

Which of the following is NOT a reason why water is important for homeostasis?

• Makes a good insulator

• Resists temperature change

• Universal solvent

• Coolant

Fill in the Blank

In a solution, the substance that is being dissolved is called the ___.

Multiple Select

Which of the following statements about solutions is/are correct?

• Ionic compounds disperse as ions in water

• The solute is the substance being dissolved

• The solvent is where the solute dissolves

• All solutions are solids

Multiple Choice

Based on the diagram, what happens to NaCl when it is added to water?

• It forms a suspension

• It dissolves and separates into Na+ and Cl- ions

• It remains as a solid at the bottom

• It reacts to form a gas

Multiple Choice

What are the three atoms that make up a water molecule (H2O)?

• Two oxygen and one hydrogen

• One oxygen and two hydrogen

• Three hydrogen

• One hydrogen and two oxygen