Water

Which of the following is the chemical formula of water?

• dihydrogen oxide
• OH-
• H2O
• H3O

Which term describes a molecule with positive and negative charges?

• Magnetic
• Surface Tension
• Polar
• Balanced

The water molecule's attraction to other water molecules is a RESULT of its....

• Surface Tension
• Polarity
• Evaporation Rate
• Magnetism

Which of the following physically observable characteristics is a RESULT of the water molecule's polarity?

• It has 2 H and 1 O atoms.
• It has surface tension
• It goes through phase changes.
• It is transparent

Which property of water allows small objects to move across its surface?

• Its transparency
• Its energy level
• Its surface tension
• Its temperature

Which of the following statements about water is not true?

• Water occupies a greater volume in its solid state than in its liquid state.
• Water's volume in its liquid state can be greater than the volume of the container that it is in.
• Water is a solid at a lower thermal energy than oxygen.
• Water's molecules have polar charges.

Liquid A's molecules have greater polarity than liquid B's molecules. Which statement accurately compares the evaporation rate of both liquids.

• Liquid A and Liquid B will evaporate at the same rate.
• Liquid A will evaporate at a faster rate than liquid B.
• Liquid B will evaporate at a faster rate than liquid A.

Which is a true statement about the change in water's volume during freezing?

• It increases because all substances increase in volume when they freeze.
• It decreases because all substances decrease in volume when they freeze.
• It increases because air bubbles are trapped.
• It increases because its molecules form a crystal pattern that contains empty space.