Unit 2 Review Question Preview (ID: 53010)
Physical And Chemical Properties Of Elements.
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A student has to calculate the density of a irregular object. The mass of the object is 105 grams. The object displaced 35 ml of water. What is the density?
a) 3500g/ml
b) .33g/ml
c) 3.0g/ml
d) 3.3g/ml
A student wants to find the density of a dice. they would have take what measurements?
a) measurement of the side
b) mass
c) volume
d) all of the above
A student has to calculate the density of an object. Which one is the correct formula?
a) Density = mass divided by volume
b) Density = mass added to volume
c) Density = mass subtracted by volume
d) Density = mass multiplied by volume
In order to control the amount of electricity flowing through a cell phone, a company would need to purchase a material that is solid material that is a semi conductor. This material would be classified as:
a) metal
b) nonmetal
c) metalloid
d) insulator
A student observes an object and it is solid, malleable but not ductile and shiny. The sample would be classified as:
a) nonmetal
b) metalloid
c) metal
d) homogenous
A student sees a rock. It is pale yellow brittle, solid, and is not shiny. What is its classification?
a) nonmetal
b) metalloid
c) metal
d) heterogenous
copper is classified as a metal because it has these properties
a) malleable, brittle, conductor of electricity, shiny luster
b) malleable, ductile, insulator of electricity, shiny luster
c) malleable, ductile, conductor of electricity, and shiny luster
d) malleable, ductile, conductor of electricity, dull luster
Metals can be stretched into thin wires without breaking. This is known as
a) ductility
b) malleability
c) insulator
d) conductor
Metals physical properties include all but
a) malleable
b) shiny luster
c) good conductors of heat and electricity
d) brittle
The capability of a substance to be shaped without breaking is known as
a) brittle
b) malleable
c) insulator
d) conductor
A student needs the density of a cube for a lab. Each side is 3cm long and its mass is 12g. What is the density of the cube?
a) 0.4g/cm3
b) 2.25g/cm3
c) 4.0g/cm3
d) 36g/cm3
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