Chemical Bonding
Practice Test
1.
Green plants take in this gas and give off oxygen during photosynthesis.
a.
carbon dioxide
b.
nitrogen
c.
ammonia
d.
hydrogen
2.
The substances to the left of the reaction arrow are called _______________.
a.
gases
b.
reactants
c.
products
d.
precipitates
3.
These two elements combine to form water.
a.
hydrogen and chlorine
b.
carbon and hydrogen
c.
hydrogen and oxygen
d.
carbon and oxygen
4.
_____________ is the measure of an atom's ability to attract electrons in a bond.
a.
Ionic radius
b.
Shielding
c.
Electronegativity
d.
melting point
5.
What is the frequency of yellow light , which has a wavelength of 5.56 x 10 -7 m?
a.
1.85 x 10 15 Hz
b.
1.85 x 10 15 m/s
c.
5.40 x 10 14 m/s
d.
5.40 x 10 14 Hz
6.
These elements commonly have more than one positive oxidation number.
a.
transition elements
b.
alkaline earths
c.
alkali metals
d.
noble gases
7.
What is the formula for sulfur trioxide?
a.
SO
b.
SO
3
2-
c.
SO
3
d.
S
3
O
8.
Changes in an equilibrium system can be described according to _____________ principle.
a.
Boyle's
b.
Rutherford's
c.
Le Chatelier's
d.
Dalton's
9.
Water molecules stick together to form droplets because of their ___________.
a.
masses
b.
volumes
c.
polarities
d.
covalencies
10.
The type of analysis based on the movements of a stationary phase and a mobile phase is called _____________.
a.
titration
b.
phase movement
c.
photography
d.
chromatography
11.
A description of a chemical reaction that includes the names of all reactants and products, but not the formulas, is called a ___________________.
a.
word equation
b.
chemical equation
c.
balanced equation
d.
skeleton equation
12.
________________ indicate a state of equilibrium in a chemical equation.
a.
Double reaction arrows
b.
A plus sign
c.
An equal sign
d.
A minus sign
13.
This color of light has the highest frequency of the visible electomagnetic spectrum.
a.
violet
b.
blue
c.
red
d.
green
14.
In general, _________ are malleable and ductile.
a.
metals
b.
noble gases
c.
nonmetals
d.
metalloids
15.
A sodium atom can achieve an octet by ________________.
a.
gaining one electron
b.
losing one electron
c.
gaining four electrons
d.
lose three electrons
16.
A ____________ reaction is one in which one element takes the place of another in a compound.
a.
single displacement
b.
double displacement
c.
decomposition
d.
synthesis
17.
The formula for barium nitrite is __________.
a.
Ba(NO
2
)
2
b.
Ba(NO
3
)
2
c.
BaNO
32
d.
BaNO
18.
What type of reaction is represented by the equation Pb(NO
3
)
2
+ K
2
CrO
4
PbCrO
4
+ 2KNO
3
?
a.
decomposition
b.
synthesis
c.
single displacement
d.
double displacement
19.
These interact when atoms react.
a.
only s-sublevel electrons
b.
inner-level electrons
c.
valence electrons
d.
neutrons
20.
What is the name of the molecular compound NO
2
?
a.
dinitrogen dioxide
b.
nitrogen dioxide
c.
nitrogen dioxygen
d.
nitrite
