Consider the relative amounts of energy in different phases

2/21/03


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Consider the relative amounts of energy in different phases

Sensible heat - causes a change in the temperature of a phase by changing the kinetic energy of atoms or molecules in the phase

Pure water - the water molecule H2O

Pure water - the water molecule H2O

Pure water - the water molecule H2O

Polar water molecules are held together by an electrostatic force

Hydrogen bonds are responsible for many of water’s unusual physical properties

Physical properties of water, I

Physical properties of water, II

Physical properties of water, III

Physical properties of water, IV

PPT Slide

PPT Slide

Physical properties of water, IV • In crystalline water, H2O molecules bond together in a structure characterized by open, six-sided rings; the shape is dictated by the tetrahedral shape of H2O molecule • The volume filled by 24 H2O molecules in ice = the volume filled by 27 H2O molecules in water

Aqueous solutions

Aqueous solutions, II

An interesting practical example, I

An interesting practical example, II

Carbonate compensation depth (CCD)

PPT Slide

Effects of dissolved substances on water properties

Author: Steven Wojtal

Email: steven.wojtal@oberlin.edu

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