Matter Review 2: Question Preview (ID: 785)


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Select the intensive physical property from the list below.
a) Water boils at 100 C b) A lead doorstop weighs 1.62 kg c) Measure a piece of aluminum foil to 20 inches to sculpt a mole for Mole Day d) The nugget had a volume of 4.31 mL
Select the extensive physical property from the list below.
a) the aluminum cylinder had a calculated area of 2.37 cm2 b) the density of an aluminum bar was determined to be 2.70 g/cm3 c) the melting point of water is 0 C d) ethanol is in the liquid state at 70 C
Given the material, 3 Jb2Sm, how would it be classified?
a) compound b) element c) heterogeneous mixture d) homogeneous mixture
How many molecules are present in this material: 2 Sm2 + 3 R2Sm
a) 3 b) 5 c) 9 d) 13
Which of the following can be separated by physical means?
a) mixture b) element c) compound d) both elements and compounds
Filtration separates components of a mixture by this property:
a) sizes of particles b) boiling points c) density d) solubility
A beaker of some material contains three phases. The material is (a)
a) hetergeneous mixture b) homogeneous mixture c) element d) compound
Matter that is uniform throughout in definite proportions would be classified as a(n)
a) substance b) heterogeneous mixture c) homogeneous mixture d) solution
Elements and compounds are classified as
a) pure substances b) heterogeneous mixtures c) homogeneous mixtures d) solutions
You are evaluating a cooling curve of time vs temperature for ethanol. You notice that the temperature is stationary for several minutes at both -17 C and 78 C. Account for this anomaly.
a) the substance is in transition from one state of matter to another b) the substance is first melting then boiling c) the heat source has been removed from beneath the container d) the kinetic energy of the particles is decreasing
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