Unformatted text preview: loride is a white solid that melts at very high temperatures.
All properties of matter are either extensive or intensive properties. Extensive properties depend on the
amount of matter being considered. Volume and mass are examples. In contrast, temperature and density are two
properties that do not depend on the amount of mass present. Thus, they are intensive properties.
EXAMPLE 1.1 Chemical and Physical Properties
The following are properties of the element silicon; classify them as physical or chemical properties.
a. Melting point, 1410°C
b. Reacts with fluorine to form silicon tetrafluoride
c. Gray color
d. Not affected by most acids
•Method of Solution
Physical properties can be observed without a change in composition, while chemical properties describe
reactions with other substances.
a. Melting involves a change in physical state but no chemical change. Answer: The melting point is a
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This note was uploaded on 09/15/2009 for the course CHEM 102 taught by Professor Bastos during the Spring '08 term at Adelphi.
- Spring '08