Properties of Water

Which type of bond?

• Hydrogen bond

• British secret agent

• James Bond

• Between different water molecules

• Covalent bond

• Within a water molecule

• strong bond

• Covalent bond

• weak bond

• Hydrogen bond

The fact that ice is ​ (a)   than liquid water is important to protect ​ (b)   in ponds and lakes. The ​ (c)   /bottom zone plants & animals can stay alive. The ice forms an ​ (d)   layer so the lake doesn't completely freeze.

• "less dense"
• life
• benthic
• insulating

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Match the temperatures

• water's

  melting point

• water's

  freezing point

• 100⁰C

• 100⁰C

• 0°C

• 0°C

• water's

  condensation point

• water's

  boiling point

Tags

NGSS.MS-PS1-4

Water has a high ​ (a)   . This means that a lot of ​ (b)   must be applied before water will change ​ (c)   . So, water provides a​ (d)   environment that allows organisms to slowly adjust to temperature changes. Also, sea water moderates nearby​ (e)   .

• specific heat
• thermal energy
• temperature
• stable
• land temperatures

Tags

NGSS.MS-PS3-4

Match the densities

• .9 g/L

• solid water (ice)

• 1 g/L

• liquid water

• .02 g/L

• gaseous water (vapor)

Answer explanation

gas is the least dense (so it rises)

solid is less dense than liquid (so ice floats on water)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Match the location along the phase change graph

• B

• Boiling Pt/Evaporation Pt/ Condensation Pt

• D

• B

• more thermal energy isn't raising Temp

• Freezing Pt/Melting point

• all added heat is breaking H bonds of li

• D

Tags

NGSS.MS-PS1-4

Match the property that causes the environmental factor that is beneficial to marine organisms

• it's temperature changes slowly

• solid water is less dense than liquid

• bodies of water freeze at the surface

• water is polar

• salt easily dissolves in it

• water has a high specific heat

The oxygen in H₂O is bound by a strong ​ (a)   and organisms cannot remove that oxygen when breathing. Dissolved oxygen is ​ (b)   molecule in a mixture with H₂O molecules. ​ (c)   is ​ (d)   and is added to water by surface diffusion from air, aeration from churning water, and ​ (e)   by aquatic producers.

• covalent bond
• O2
• Dissolved oxygen
• breathable
• photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

NGSS.MS-PS1-1

Which is FALSE about dissolved oxygen?

• warm water holds more dissolved oxygen than cool water

• dissolved oxygen levels can be a limiting factor in aquatic habitats

• dissolved oxygen is increased by more photosynthesis

• dissolved oxygen is decreased by more respiration and decaying matter

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Match the dissolved gas to its fact

• oxygen

• Oxygen

• measured with a D.O. meter

• Carbon

• from fertilizer runoff in waterways

• taking in during photosynthesis

• 80% of the gasses in marine water

• Nitrogen

• Carbon dioxide

• produced by photosynthesis

Tags

NGSS.MS-LS1-6