Properties of Water

What is a water molecule composed of?

• 1 Hydrogen atom and 2 Oxygen atoms

• 2 Hydrogen atoms and 1 Oxygen atom

• 3 Oxygen atoms

• 2 Helium atoms and 1 Oxygen atom

The illustration provided shows a river and four cities on that river. When the water from the river was sampled at location X, it was determined to be polluted with various chemicals. What would be the most likely source for this pollution?

• City 1 and City 2

• City 2 and City 3

• City 3 and City 4

• City 1 and City 4

What is the water cycle?

• the 3 forms of water found in nature

• the process by which water continuously moves through the environment

• when water melts at a given temperature

• when clouds form above and on the earth's surface as fog

What part of the water cycle does this picture show?

• condensation

• precipitation

• evaporation

• transpiration

What is it called when plants give off water vapor as a waste product?

• condensation

• evaporation

• sublimation

• transpiration

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

Water is a universal solvent because it...

• can be found anywhere

• freezes when it gets cold

• floats when frozen

• dissolves most substances

A process powered by attraction among water molecules that causes them to move upward through a narrow tube such as the stem of a plant is called...

• polar molecule

• surface tension

• capillary action

• specific heat

Mixture that forms when one substance dissolves into another is a...

• solvent

• solute

• solution

• suspension