Physical Science Test 5A
 
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Physical Science Test 5A

Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 
Mendeleev arranged the known chemical elements in a table according to increasing
a.
atomic number.
c.
number of protons.
b.
number of electrons.
d.
mass.
 

 2. 
In a periodic table, a set of properties repeats from
a.
element to element.
c.
column to column.
b.
group to group.
d.
row to row.
 

 3. 
Mendeleev gave the name eka-aluminum to a(an)
a.
compound containing aluminum.
b.
mixture of aluminum and an unknown element.
c.
unknown element he predicted would have properties similar to those of aluminum.
d.
rare isotope of aluminum.
 

 4. 
The usefulness of Mendeleev’s periodic table was confirmed by
a.
the discovery of subatomic particles.
b.
its immediate acceptance by other scientists.
c.
the discovery of elements with predicted properties.
d.
the discovery of the nucleus.
 
 
pstest5a_files/i0060000.jpg

Figure 5-1
 

 5. 
Figure 5-1 shows a portion of a blank periodic table. Identify the segments labeled A and B.
a.
A and B are both periods.
c.
A and B are both groups.
b.
A is a period and B is a group.
d.
A is a group and B is a period.
 

 6. 
Moving from left to right across a row of the periodic table, which of the following values increases by exactly one from element to element?
a.
isotope number
c.
atomic mass unit
b.
atomic number
d.
mass number
 

 7. 
The standard on which the atomic mass unit is based is the mass of a
a.
proton.
c.
chlorine-35 atom.
b.
neutron.
d.
carbon-12 atom.
 

 8. 
The atomic mass of an element is
a.
the sum of the protons and neutrons in one atom of the element.
b.
twice the number of protons in one atom of the element.
c.
a ratio based on the mass of a carbon-12 atom.
d.
a weighted average of the masses of an element’s isotopes.
 

 9. 
One twelfth the mass of a carbon-12 atom is used to define a(an)
a.
atomic number.
c.
mass number.
b.
atomic mass.
d.
atomic mass unit.
 

 10. 
The unit for atomic mass is
a.
gram
c.
pound
b.
amu
d.
none of the above
 

 11. 
Which list of elements contains only metals?
a.
carbon, iodine, tin
c.
helium, iron, copper
b.
tin, copper, cesium
d.
iodine, carbon, argon
 

 12. 
Which statement is true about the metalloid silicon?
a.
Silicon is a better conductor of electric current than silver is.
b.
Silicon does not conduct electric current under any conditions.
c.
Silicon's ability to conduct electric current does not vary with temperature.
d.
Silicon is a better conductor of electric current than sulfur is.
 

 13. 
At room temperature, none of the metals are
a.
soft.
c.
malleable.
b.
liquids.
d.
gases.
 

 14. 
Which general statement does NOT apply to metals?
a.
Most metals are ductile.
b.
Most metals are malleable.
c.
Most metals are brittle.
d.
Most metals are good conductors of electric current.
 

 15. 
Group 7A of the periodic table contains the
a.
most reactive nonmetals.
c.
least reactive nonmetals.
b.
most reactive metals.
d.
least reactive metals.
 

 16. 
Two highly reactive elements in Period 2 are the metal lithium and the
a.
metalloid arsenic.
c.
nonmetal fluorine.
b.
nonmetal selenium.
d.
nonmetal krypton.
 

 17. 
Atoms of the most reactive elements tend to have
a.
one or seven valence electrons.
c.
four or five valence electrons.
b.
eight valence electrons.
d.
no valence electrons.
 

 18. 
As you move from left to right across a period, the number of valence electrons
a.
increases.
c.
increases and then decreases.
b.
stays the same.
d.
decreases.
 

 19. 
Compared with Group 2A elements, Group 6A elements have
a.
more atoms in the ground state.
c.
more isotopes.
b.
more valence electrons.
d.
fewer valence electrons.
 

 20. 
The tendency of an element to react is closely related to
a.
its atomic mass.
b.
attractions between its atoms.
c.
the number of valence electrons in atoms of the element.
d.
the ratio of protons to neutrons in atoms of the element.
 

 21. 
A member of the boron family has three valence electrons, while a member of the nitrogen family has
a.
none.
c.
four.
b.
five.
d.
three.
 

 22. 
Which statement is NOT true about the elements fluorine, chlorine, and iodine?
a.
They are all halogens.
c.
They are similar to noble gases.
b.
They react easily with metals.
d.
They are all nonmetals.
 

 23. 
Which of the following Group 1A elements is the most reactive?
a.
Cs (cesium)
c.
K (potassium)
b.
Li (lithium)
d.
Na (sodium)
 

 24. 
Which of the following Group 7A elements is the most reactive?
a.
Cl (chlorine)
c.
F (fluorine)
b.
I (iodine)
d.
Br (bromine)
 

 25. 
Among the alkali metals, the tendency to react with other substances
a.
does not vary among the members of the group.
b.
increases from top to bottom within the group.
c.
varies in an unpredictable way within the group.
d.
decreases from top to bottom within the group.
 

 26. 
Which halogen is most likely to react?
a.
Br (bromine)
c.
I (iodine)
b.
F (fluorine)
d.
Cl (chlorine)
 

 27. 
Which of the following gases emit colors when an electric current is applied?
a.
hydrogen and helium
c.
fluorine and chlorine
b.
argon and krypton
d.
oxygen and nitrogen
 

 28. 
To keep them from reacting, some highly reactive elements are stored in
a.
water.
c.
liquid mercury.
b.
pure oxygen.
d.
argon.
 

 29. 
Which element is found in nature only in compounds?
a.
sodium
c.
oxygen
b.
helium
d.
nitrogen
 

 30. 
Which element is found in most of the compounds in your body except for water?
a.
iodine
c.
iron
b.
potassium
d.
carbon
 



 
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