Surface tension is caused by an increase of attractive forces near the surface of liquid rather than near the center of the liquid
The arrows indicate attractive forces
Cohesive forces are attractions between identical molecules in a liquid. Adhesive forces are attractions between different molecules, such as the liquid and a flat surface.
Surfactants are chemicals that decrease cohesive forces, the surface tension. Surfactants are often found in dishwasher detergent to prevent water stains or beading.
Adding heat to a solid material at a constant rate causes the following effects:
This process is called the heating curve
The heat capacity is the reciprocal of the slope where the temperature is increasing
Specific heat is the heat capacity divided by the grams of the sample used
The molar heat of fusion (melting) is the length of the solid melting plateau divided by the number of moles of the sample.
The molar heat of vaporization is the length of the liquid boiling plateau divided by moles
Cooling curve is the reverse of the heating curve.
Some liquids can be supercooled where a liquid is cooled below melting point and remains a liquid.
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