chem ch 6
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19 Terms
which state of matter is characterized by having molecules close together but moving randomly
liquid
which state of matter is characterized by having molecules far apart and moving randomly
gas
The temperature at which a liquid boils is the boiling point of the liquid. The boiling point is an indication of the intermolecular forces that hold the matter in the liquid state. Water, H2O, boils at 100°C. Ethanol, C2H6O boils at 78°C. Ammonia, NH3, boils at -33°C. Which one of the following ranks the intermolecular forces in these liquids from the strongest to the weakest?
water>ethanol>ammonia
a liquid
has a definite volume but no definite shape
a gas
has no definite shape and no definite volume
which state of matter is characterized by having molecules close together and confined in their movement
solid
the temperature at which a liquid becomes a gas is called the
boiling point
the process by which a solid is converted to a gas is called
sublimation
the process by which a gas is converted to a liquid is called
condensation
the process by which a liquid is converted to a solid is called
freezing
matter is more likely to exist in the _____ state as the pressure is increased
solid
matter is more likely to exist in the ______ state as the temperature is lowered
solid
The degree of order of matter is directly proportional to the cohesive forces that hold the matter together. In other words, the more organized the state of matter, the stronger the "glue" that holds it together. Which of the following ranks these cohesive forces from the state with the strongest to that with the weakest cohesive forces?
solid>liquid>gas
matter is more likely to exist in the _____ state as the temperature is raised
gas
which of the following ranks the three matter from most to least ordered
solid>liquid>gas
which of the following processes involves the removal of energy (heat)?
condensation
this means that generally ionic compounds are _______ at room temperature
solids
which of the following is not a property of an ionic compound? ionic compounds generally
have melting points in lower than those of molecular compounds
which of the following is the weakest
dispersion forces