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Chem Ch 13

Terms in this set (17)

The particles of a liquid do not have enough kinetic energy to overcome the attractive forces between them to escape
ST
When a liquid occupies a closed container, there are more particles entering the vapor than condensing
ST
The change of a substance directly from a solid to a gas or vapor is called condensation
NT
The rates of evaporation and condensation are equal at equilibrium
AT
Adding heat to a liquid will increase the temperature of the liquid
ST
During evaporation, the temperature of a liquid decreases
ST
Glasses do not melt at a definite temperature, but soften gradually
AT
Solid substances can exist in more than one form
ST
Allotropes are two or more different elements, which exist in the same state with the same crystal system
NT
When the atoms in a solid are randomly arranged, the solid is called a glass
ST
The type of bonding that exists between the atoms in a crystal determines the melting point of the solid
AT
A phase diagram gives information on mass changes of solids, liquids and gases
NT
Water could be made to boil at 105 C by increasing the air pressure above the water
AT
The sublimation point of a substance refers to the temperature and pressure at which the substance exists in all three phases of matter
NT
The pressure exerted by an ice skater on the ice causes the melting point of that ice to decrease
AT
Water has more than one triple point
NT
AT 101.3 kPa, the normal boiling point and melting point of water are the same
NT
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