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Chemistry Final Review

Total questions: 40

Worksheet time: 3hrs 20mins

Name
Class
Date
1.

A chemical change occurs when a piece of wood ___.

a)

is cut

b)

is painted

c)

rots

d)

Review Please!

2.

The density of aluminum is 2.70 g/cm3. What is the mass of a solid piece of aluminum with a volume of 1.50 cm3?

a)

4.05 g

b)

4.20 g

c)

0.556 g

d)

Review Please!

3.

the central part of an atom, containing protons and neutrons

a)

proton

b)

nucleus

c)

atom

d)

electron

e)

neutron

4.

the smallest particle of an element that retains the properties of that element

a)

proton

b)

nucleus

c)

atom

d)

electron

e)

neutron

5.

a positively charged subatomic particle

a)

proton

b)

nucleus

c)

atom

d)

electron

e)

neutron

6.

The nucleus of an atom is ___.

a)

positively charged and has more protons than neutrons

b)

negatively charged and has a low density

c)

the central core and is composed of protons and neutrons

7.

a negatively charged subatomic particle

a)

proton

b)

nucleus

c)

atom

d)

electron

e)

neutron

8.

a subatomic particle with no charge

a)

proton

b)

nucleus

c)

atom

d)

electron

e)

neutron

9.

What is the smallest particle of an atom?

a)

electron

b)

proton

c)

neutron

d)

Review Please!

10.

Of the elements Fe, Na, Pt, and Ar, which is a nonmetal?

a)

Fe

b)

Na

c)

Pt

d)

Ar

e)

Review Please!

11.

How many protons are in this ion?

a)

35

b)

36

c)

80

d)

45

e)

Review Please!

12.

How many neutrons are in this ion?

a)

35

b)

36

c)

80

d)

45

e)

Review Please!

13.

How many electrons are in this ion?

a)

35

b)

36

c)

80

d)

45

e)

Review Please!

14.

How many valence electrons are in this atom?

a)

3

b)

8

c)

2

d)

13

e)

Review Please!

15.

How many electron shells are in this atom?

a)

3

b)

8

c)

2

d)

13

e)

Review Please!

16.

Which of the following elements is in the same period as phosphorus?

a)

carbon

b)

magnesium

c)

oxygen

d)

Review Please!

17.

Which of the following elements has the smallest atomic radius?

a)

Bromine

b)

Chlorine

c)

Sulfur

d)

Review Please!

18.

How many valence electrons are in an atom of magnesium?

a)

2

b)

4

c)

3

d)

5

19.

Which of the following categories includes the majority of the elements?

a)

metals

b)

nonmetals

c)

liquids

d)

gases

e)

Review Please!

20.

Based on the graph, is this an exothermic or endothermic reaction?

a)

Exothermic

b)

Endothermic

21.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
22.
What atom matches this electron configuration?
[Xe] 6s2 4f14 5d9
a)
Mercury
b)
Gold
c)
Platinum
d)
Thallium
23.

What is 81.4 °F in K?

a)

301 K

b)

286 K

c)

81.4 K

d)

209 K

24.

Name this compound P4 S3P_{4\ }S_3 =

a)

Phosphorous

b)

Phosphorus sesquisulfide

c)

Phosphorous Trisulfide

d)

Sulfide Triphosphorous

25.

What are the six phase changes?

a)

Melting, Freezing, Evaporating, Deposition, Sublimination, Condensing

b)

Solid, Liquid, Gas, Air, Vapor, Water

c)

Melting, Freezing, Deposition, Water, Sublimination

26.
Balance this equation
_N2 + _H2 --> _NH3
a)
1,2,3
b)
1,3,2
c)
1,1,2
d)
2,1,1
27.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
28.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
29.
What is the measured amount of a product obtained from a chemical reaction?
a)
mole ratio
b)
theoretical yield
c)
percentage yield
d)
actual yield
30.
A chemist interested in the efficiency of a chemical reaction would calculate the
a)
mole ratio
b)
rate of reaction
c)
percent yield
d)
energy released
31.
Use the equation 2 Al + 3 Cl2 ---> 2 AlCl3.  If 2 moles of aluminum and 2 moles of chlorine are reacted, identify the limiting reactant.
a)
AlCl3
b)
Cl2
c)
Al
d)
None
32.

What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)

a)

0.8 M

b)

1.5M

c)

3.0M

d)

6.0M

33.

Which of the following is the correct formula for calculating molarity?

a)

moles/liters of solution

b)

moles/kg of solvent

c)

# particles/Avogadro's #

d)

theoretical yield/actual yield

34.

What does pH measure?

a)

the amount of hydrogen (H+) ions

b)

the amount of hydroxide (OH-) ions

c)

amount of water

d)

all of the above

35.
A solution has a pH of 7.0.  What would happen to the pH if H ions were added?
a)
pH would go up
b)
pH would go down
c)
pH would stay the same
d)
None of these
36.

As one moves down the pH scale from 14 to 1, what happens to the concentration of H+ in the solution?

a)

concentration of H+ decreases

b)

concentration of H+ increases

c)

concentration of H+ stays the same

37.

For a solution at 25oC, pH + pOH =

a)

7

b)

14

c)

1.0 x 10-14

d)

-log (1.0 x 10 -14)

38.

If the pH of a solution is 4.0, what is the pOH?

a)

4.0

b)

10.0

c)

1.0 x 10 -4

d)

cannot be determined from the information

39.
What is the equation for Charles' Law?
a)
P1V1=P2V2
b)
V1/T1=V2/T2
c)
V1/n1=V2/n2
d)
P1/T1=P2/T2
40.
What is the equation for Boyle's Law?
a)
P1V1=P2V2
b)
V1/T1=V2/T2
c)
V1/n1=V2/n2
d)
P1/T1=P2/T2

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