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Ch. 2 Sect Assmt
Terms in this set (12)
Name 2 categories used to classify properties of matter
Intensive and extensive
Explain why all samples of a given substance have the same intensive properties.
Every sample of a given substance has the same chemical composition
name the three states of matter
solid, liquid, gas
Describe the two categories used to classify physical changes.
reversible or irreversible
Which property in Table 2.1 can most easily distinguish sodium chloride from the other solids?
In what ways are liquids and gases alike? In what way are liquids and solid different?
Liquids and gases have an indefinite shape. The shape of a solid is definite; the shape of a liquid is indefinite.
Is freezing mercury reversible or irreversible? explain
The freezing of mercury is reversible because solid mercury can be melted.
Explain why samples of gold and copper can have the same extensive properties, but not the same intensive properties.
Samples of gold and copper can have the same mass and volume (extensive properties). They cannot have the same set of intensive properties because they have different chemical compositions.
How are mixtures classified?
heterogeneous or homogeneous
What type of properties can be used to separate mixtures?
Differences in physical properties
Explain the term phase as it relates to homogeneous and heterogeneous mixtures.
. A phase is any part of a sample with uniform composition. There is one phase in a homogeneous mixture and two or more phases in a heterogeneous mixture.
(a). food coloring (b). ice cubes in water (c). mouthwash (d). mashed, unpeeled potatoes
. a. homogeneous b. heterogeneous c. homogeneous d. heterogeneous
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