Exploring the Properties of H2O

What is the chemical formula for water?

• H2O2

• HO2

• O2H

• H2O

In which states of matter is water naturally found on Earth?

• Solid, liquid, and gas

• Solid and gas

• Solid and liquid

• Liquid and gas

What type of bonds hold the hydrogen and oxygen atoms together in a water molecule?

• Hydrogen bonds

• Covalent bonds

• Ionic bonds

• Metallic bonds

What is the electrical charge on the side of the water molecule with the hydrogen atoms?

• Positive

• Negative

• Variable

• Neutral

What term describes the attraction between water molecules?

• Adhesion

• Cohesion

• Diffusion

• Osmosis

What property allows water to stick to other surfaces?

• Cohesion

• Capillarity

• Surface tension

• Adhesion

What happens to a salt crystal when it is placed in water?

• It remains intact

• It sinks to the bottom

• It dissolves

• It floats

Which part of the water molecule surrounds the sodium ions when salt dissolves in water?

• Oxygen side

• Hydrogen side

• Both sides

• Neither side

What charge do chloride ions have?

• Variable

• Negative

• Positive

• Neutral

What is the significance of water in sustaining life?

• It exists in three states

• It is cohesive

• All of the above

• It is a good solvent