Periodic Properties of the Elements
Practice Test
1.
What is the maximum number of electrons that can be present in each principal energy level of hydrogen?
a.
2n 2
b.
n 2
c.
2n
d.
n
2.
An electron in an atom emits energy in the form of light when it ________________.
a.
leaves the atom
b.
leaves the nucleus
c.
rises to a new energy level
d.
falls back to a lower energy level
3.
This transition element is used in many barometers and thermometers.
a.
titanium
b.
mercury
c.
iron
d.
copper
4.
In boron-doped silicon, electrons are said to move into and out of ___________.
a.
holes
b.
nuclei
c.
inner energy levels
d.
diodes
5.
Which elements would you expect to be the most reactive alkaline earth metal?
a.
lithium
b.
radium
c.
francium
d.
beryllium
6.
_______________ is a measure of the size of an atom.
a.
Atomic radius
b.
Oxidation number
c.
Number of electrons
d.
Nuclear charge
7.
Lanthanides and actinides are known as _________________.
a.
noble gases
b.
halogens
c.
metalloids
d.
inner transition elements
8.
Molten sodium chloride conducts electricity because ______________________.
a.
the chlorine atoms carry a charge
b.
chlorine gas escapes
c.
solid sodium conducts, too
d.
the ions are free to move
9.
Many transition elements have multiple positive oxidation states because their atoms can lose some of their _______________.
a.
nuclear protons
b.
s electrons
c.
d electrons
d.
p electrons
10.
A magnesium atom has _______ valence electron.
a.
four
b.
three
c.
five
d.
two
11.
A compound that conducts electricity when melted or dissolved in water is an _____________.
a.
molecule
b.
hydrocarbon
c.
electrolyte
d.
electron
12.
The two routes for nitrogen fixation in nature are __________.
a.
bacteria and the water cycle
b.
lightning and ultraviolet radiation
c.
bacteria and lightning
d.
lightning and ozone formation
13.
The two rows beneath the main body of the periodic table contain the _________________.
a.
noble gases
b.
halogens
c.
alkali metals
d.
inner transition elements
14.
These two elements are liquids at room temperature and pressure.
a.
mercury and oxygen
b.
lithium and cesium
c.
mercury and bromine
d.
silver and nitrogen
15.
The elements in Groups 1, 2, and 13-17 are called the _____________.
a.
transition elements
b.
main group elements
c.
noble gases
d.
alkali metals
16.
Green plants take in this gas and give off oxygen during photosynthesis.
a.
nitrogen
b.
hydrogen
c.
ammonia
d.
carbon dioxide
17.
The fourth energy level can hold _______ more electrons than the third energy level.
a.
10
b.
6
c.
2
d.
14
18.
Mendeleev predicted the properties of these two elements, which were unknown at the time.
a.
carbon and silicon
b.
silicon and aluminum
c.
gallium and germanium
d.
boron and arsenic
19.
Most alpha particles in Rutherford's gold-foil experiment ________________________.
a.
passed straight through the foil
b.
bounced back
c.
were deflected at small angles
d.
were deflected at large angles
20.
A mystery compound dissolves in water to produce a solution that does not conduct electricity. The compound cannot be __________.
a.
butane
b.
ethanol
c.
sodium chloride
d.
benzene
