Properties of Water

Water droplets take a spherical shape (as pictured) because of ____________

• adhesion
• cohesion
• capillary action
• solubility

Refer to the picture of water sticking to a leaf; this is occurring because of:

• Adhesion

• Cohesion

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

molecule in which opposite ends have opposite electric charges

• cohesion
• polar molecule
• hydrogen bond
• solution

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

A general definition of cohesion is the attraction of:

• particles of the same substance
• particles of a different substance
• particles of both the same and different substances
• particles of neither the same or different substances

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.

The amount of oxygen in the water, measured in parts per million (ppm)

• pH
• Dissolved Oxygen
• nitrates
• eutrophication

What property of water allows water to flow against gravity?

• Polarity

• Cohesion

• Capillary Action

• Adhesion

Which water quality indicator will be most impacted by burning fossil fuels and air pollution?

• nitrates
• pH (water will be more acidic)
• Dissolved oxygen
• turbidity