Properties of Water

Which side of the water molecule has a slightly negative charge?

• It's all negative

• It's all positive

• Hydrogen

• Oxygen

Tags

NGSS.MS-PS1-1

Which property of water allows it to dissolve many substances?

• High surface tension

• Polarity

• Low density

• High boiling point

Which property of water contributes to its ability to form droplets?

• High surface tension

• Low boiling point

• High density

• Polarity

What causes water to expand when it freezes?

• Increased molecular motion

• Formation of a crystalline structure

• Decreased hydrogen bonding

• Increased density

Tags

NGSS.MS-PS1-4

What is the primary reason ice floats on water?

• Ice is denser than water

• Ice has a crystalline structure

• Ice is less dense than water

• Ice has more hydrogen bonds

Which property of water allows it to climb up plant roots and stems?

• Adhesion

• High boiling point

• Low density

• High surface tension

Why does ice float?

• water expands when it freezes, making ice less dense than water

• water compacts when it freezes, making ice more dense than water

• hydrogen bonds in water push the ice to the surface

• ice is afraid of water, and avoids it

Tags

NGSS.MS-PS1-4

If this is a floating ice sheet, which property of water is this polar bear relying on? 

• Surface Tension

• Cohesion

• Adhesion

• Density

Water striders can walk across the surface of calm water. Their feet push the surface of the water down slightly, but they do not break the surface. Why?

• The insects are light enough so they do not break the hydrogen bonds holding the water molecules together
  
• The insects actually use their wings to hover slightly above the water’s surface and they only skim it with their feet.
• The insect’s feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water’s surface.
• The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
  

Tags

NGSS.MS-PS2-5

Capillary Action is important for

• Water moving from roots to leaves in plants

• Air moving from mouth to lungs

• Ice floating on water

• Water moving to lower areas

Tags

NGSS.MS-ESS2-4