States of Matter
Practice Test
1.
The chemical equation Zn + 2HCl → H
2
+ ZnCl
2
represents a _________.
a.
synthesis reaction
b.
decomposition reaction
c.
single-replacement reaction
d.
double-replacement reaction
2.
What can you conclude from the deflection of a cathode ray in a magnetic field?
a.
The ray must need to travel in a vacuum.
b.
The ray must be composed of iron.
c.
The ray must have a positive charge.
d.
The ray must be composed of charged particles.
3.
How many atoms of carbon are in a pure sample of carbon having a mass of 72.0 g?
Element
Molar Mass (g/mol)
Hydrogen
1.01
Carbon
12.01
Chlorine
35.45
a.
3.6 x 10
23
b.
36 x 10
24
c.
4.33 x 10
25
d.
3.6 x 10
24
4.
Which of the following is not a fundamental particle in an atom?
a.
electron
b.
neutron
c.
element
d.
proton
5.
Which molecule will not undergo hydrogen bonding?
a.
HF
b.
NH
3
c.
H
2
O
d.
CH
4
6.
A sample of a compound is found to contain 0.404 grams of Fe and 0.174 grams of O. What is the empirical formula for this compound?
a.
FeO
2
b.
FeO
c.
Fe
2
O
3
d.
Fe
3
O
4
7.
What is the percent composition of carbon dioxide CO
2
?
a.
73% C and 27% O
b.
27% C and 73% O
c.
50% C and 50% O
d.
33% C and 66% O
8.
According to the phase diagram for CO
2
, what is the critical point for carbon dioxide?
a.
-45
b.
-100
c.
-78
d.
31
9.
Which of the following is the general definition of a liquid?
a.
Matter that has neither a fixed volume nor a fixed shape.
b.
Matter that has a fixed volume but no fixed shape.
c.
Matter that has a fixed shape but no fixed volume.
d.
Matter that has a fixed volume and a fixed shape.
10.
In the chemical equation below, which of the components is a precipitate?
HCl(aq) + AgNO
3
(aq) → AgCl(s) + HNO
3
(aq)
a.
HCl(aq)
b.
HNO
3
(aq)
c.
AgNO
3
(aq)
d.
AgCl(s)
11.
The point on a phase diagram where the solid state, the liquid state, and the gas vapor state can coexist is _________.
a.
the triple point
b.
the pressure point
c.
the absolute zero point
d.
the critical point
12.
Which of the following statements is correct?
a.
The nucleus is mostly empty space.
b.
A proton is about 2000 times more massive than an electron.
c.
A neutron will always be found orbiting the nucleus.
d.
An electron is about 2000 times more massive than a proton.
13.
Which of the following single-replacement reactions will occur?
a.
Cu(s) + ZnCl
2
(aq) →
b.
Cl
2
(g) + HBr(aq) →
c.
Au(s) + Cu(NO
3
)
2
(aq) →
d.
Br
2
(g) + HF(aq) →
14.
What is the smallest particle of an element that maintains the properties of the element?
a.
mixture
b.
cation
c.
molecule
d.
atom
15.
Which of the following gases will diffuse the fastest at room temperature?
a.
CO
2
b.
H
2
c.
N
2
d.
Ne
16.
A compound contains sulfur, oxygen, and chlorine. Analysis of a sample showed that it contained by mass 26.95% sulfur and 59.61% chlorine. What is the simplest formula for this compound?
a.
SOCl
b.
SOCl
2
c.
SO
2
Cl
2
d.
SO
2
Cl
17.
Which of these is a spectator ion in the reaction 2NaOH(aq) + CuC
l2
→ 2NaCl(aq) + Cu(OH)
2
(s)?
a.
OH
b.
Cl and Na
c.
Na
d.
Cu
18.
Which of the following solids is a metallic solid?
a.
iodine
b.
sulfur
c.
nickel
d.
graphite
19.
Which of the following molecules can form hydrogen bonds?
a.
NH
3
b.
BaH
3
c.
NaH
3
d.
CH
3
20.
Which of the following illustrates effusion of a gas?
a.
Fragrance of cologne is present in a room in which none has been used.
b.
A tire deflates after being punctured by a nail.
c.
A dog follows a scent during a search and rescue mission.
d.
Cooking aromas from the kitchen can be detected by a person on the front porch.
