1.1-Water and It's Properties

Refer to the picture; the water strider can walk over waters surface. This is occurring due to:

• Adhesion

• Cohesion

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

• Adhesion

• Cohesion

Which of the following can water not do since it's polar:

• Be cohesive & adhesive
• Dissolve other polar molecules
• Influence weather, not climate
• Display a high heat capacity

Water is the universal solvent since it's:

• water
• such a small molecule 
• polar
• essential to life

Tags

NGSS.HS-ESS2-5

Cohesion and adhesion have this in common:

• Hydrogen bonding
• They create non-polar molecules
• Only relate to water
• Universal solvent

Water's high heat capacity is mainly due to:

• Water's cohesive ability
• Water's adhesive ability
• Cohesion & H+ Bonding
• Adhesion & Earth's temperature climate

Large bodies of water do not quickly fluctuate in temperature. Why?

• Water is a solvent.
• Water has a high heat capacity.
• Water acts as a buffer.
• Water is non-polar.

Tags

NGSS.HS-PS3-4

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

What two elements make up water?

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

Tags

NGSS.MS-PS1-1

Which is NOT a unique property of water?

• Frozen water floats on liquid water.
• Water covers most of the Earth’s surface and retains a large amount of heat.
• Water molecules stick to each other through hydrogen bonds.
• Water cools very rapidly.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4