WorksheetsChemistry Fall Review
Total questions: 40
Worksheet time: 2hrs 29mins
Name
Class
Date
1.
Which object has greater density?
a)
Blue
b)
Green
c)
They are the same
2.
What is the density of a Christmas present with a mass of 8.1 g and a volume of 1200 mL?
a)
0.122 g/mL
b)
0.00675 g/mL
c)
148 g/mL
d)
297 g/mL
3.
What is the mass of a piece of iron with a volume of 17.21 mL if iron has a density of 7.8 g/mL?
a)
2.206 g
b)
0.453 g
c)
35.6 g
d)
134.238 g
4.
How many significant figures are in the number 2005?
a)
1
b)
2
c)
3
d)
4
5.
How many significant figures are in 0.005?
a)
1
b)
2
c)
3
d)
4
6.
How many decimals should the answer have?
4.1 m + 9.376 m + 0.04 m
4.1 m + 9.376 m + 0.04 m
a)
1
b)
2
c)
3
d)
4
7.
What is the answer to the correct decimal place?
14 cm + 1.0078 cm + 0.0069 cm
14 cm + 1.0078 cm + 0.0069 cm
a)
15.014 cm
b)
15.01 cm
c)
15.0 cm
d)
15 cm
8.
How many significant figures should the answer have?
7.1 x 18.3 x 0.29
7.1 x 18.3 x 0.29
a)
1
b)
2
c)
3
d)
4
9.
What is the correct answer to the correct number of significant figures?
9,200 x 1.08 x 7.167
9,200 x 1.08 x 7.167
a)
1548.072
b)
1548
c)
1550
d)
1600
10.
How many milligrams are in 9.06 g?
a)
0.00906 mg
b)
9060 mg
c)
906 mg
d)
0.906 mg
11.
How many liters are in 42.84 kL of milk?
a)
428,400 L
b)
4284 L
c)
0.04284 L
d)
42,840 L
12.
How many moles are in 1.03 x 10²³ atoms of Calcium?
a)
0.171 mol
b)
1.2 x 10²³ mol
c)
2.5 x 10²¹ mol
d)
0.906 mol
13.
How many grams are in 4.92 moles of Na₂SO₄?
a)
0.035 g
b)
142 g
c)
2.5 x 10²¹ g
d)
698.6 g
14.
Is the following reaction balanced?
H₂ + FeCl₃ -> Fe + 3 HCl
H₂ + FeCl₃ -> Fe + 3 HCl
a)
Yes
b)
No
c)
Not enough information given
15.
What coefficients would balance the following reaction?
_NaOH + _H₂S --> _Na₂S + _H₂O
_NaOH + _H₂S --> _Na₂S + _H₂O
a)
2, 1, 1, 1
b)
1, 1, 2, 1
c)
1, 1, 1, 1
d)
2, 1, 1, 2
16.
Which of the following isn't a chemical change?
a)
rusting
b)
melting
c)
acid burning
d)
cooking
17.
What is the difference between a chemical and physical change?
a)
physical changes release energy
b)
chemical changes turn into new substances
c)
physical changes do not use chemicals
d)
physical changes absorb heat
18.
How many electrons can a d orbital hold?
a)
2
b)
6
c)
10
d)
14
19.
Which can hold more electrons -- a 4s or a 5s?
a)
4s
b)
5s
c)
They both can hold the same
d)
Not enough info
20.
What is the electron configuration of Nickel?
a)
1s²2s²2p⁶3s²3p⁶4s²4d⁸
b)
1s²2s²2p⁶3s²3p⁶4s²4d¹⁰
c)
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰
d)
1s²2s²2p⁶3s²3p⁶4s²3d⁸
21.
What is the shorthand configuration of Uranium?
a)
[Xe] 7s⁶
b)
[Rn] 7s²5f⁴
c)
[Rn] 7s⁶
d)
[Xe] 7s²5f⁴
22.
What is the shorthand configuration of Tungsten?
a)
[Xe] 6s²4f¹⁴5d⁴
b)
[Rn] 6s²4f¹⁴5d⁴
c)
[Rn] 6s²5d⁴
d)
[Xe] 6s²5d⁴
23.
What is different between two isotopes?
a)
Number of protons
b)
Number of electrons
c)
Number of neutrons
d)
Number of leptons
24.
Which of the following is not correct for Bromine-82?
a)
47 neutrons
b)
35 electrons
c)
35 neutrons
d)
35 protons
25.
Which of the following is correct for ²⁷Mg?
a)
27 p, 27 e, 27 n
b)
12 p, 12 e, 12 n
c)
12 p, 12 e, 15 n
d)
27 p, 27 e, 12 n
26.
What is the average atomic mass of nitrogen if N-14.003 has 99.63% abundancy and N-15.0001 has 0.37% abundancy?
a)
15.0021 amu
b)
1400.66 amu
c)
14.007 amu
d)
14.566 amu
27.
Which of the following is a homogeneous mixture?
a)
sand
b)
orange juice with pulp
c)
tap water
d)
m&ms
28.
A measurement that is close to the correct value is said to be
a)
accurate
b)
precise
c)
reliable
d)
significant
29.
Which experiment matches the scientist Ernest Rutherford?
a)
Newton's Apple
b)
Hydrogen Spectra
c)
Cathode Ray
d)
Gold Foil
30.
The electron was discovered by
a)
JJ Thompson
b)
Niels Bohr
c)
John Dalton
d)
Ernest Rutherford
31.
What is the wavelength of light that has a frequency of 380 Hz?
a)
1.14 x 10¹¹ m
b)
7.89 x 10⁵ m
c)
1.27 x 10⁻⁶ m
d)
3743 m
32.
The element Sulfur has how many valence electrons?
a)
2
b)
-2
c)
6
d)
8
33.
Which ion is least likely to form?
a)
Na⁺¹
b)
Ca⁺²
c)
O⁺²
d)
Cl⁻¹
34.
What compound would form between Ca and O?
a)
Ca₂O
b)
CaO
c)
CaO₂
d)
CaO₃
35.
Name the compound CuSO₄
a)
Copper Sulfide
b)
Copper (I) Sulfate
c)
Copper Sulfate
d)
Copper (II) Sulfate
36.
Name the compound N₂O₃
a)
Dinitrogen trioxide
b)
Nitrogen oxide
c)
Nitrogen trioxide
d)
Nitrate
37.
What is the name of Mr. Bell's wife?
a)
Mrs. Bell
b)
Rose Bell
c)
Elizabeth Bell
d)
Ringa Bell
38.
How many years has Mr. Bell taught?
a)
2
b)
3
c)
4
d)
5
39.
How old is Mr. Bell?
a)
25
b)
26
c)
27
d)
28
40.
What state was Mr. Bell born in?
a)
Texas
b)
California
c)
New York
d)
Colorado
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