wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

MIDTERM EXAM ENITV21D

Total questions: 50

Worksheet time: 2hrs 7mins

Name
Class
Date
1.

How many significant figures does the following number have?1.2500 x 10310^3  

a)
5
b)
3
c)

Ambiguous: 3 or 5

d)

7

2.
Solve and give your answer with the correct number of significant figures
24.28 + 12.5
a)
3.687 x 101
b)
36.8
c)
37
d)
3.70x101
3.
Solve and give your answer with the correct number of significant figures
(12.470)(271)
a)
3366.9
b)
3.37x103
c)
3400
d)
3370
4.

By using prefixes, we can write 335 × 10-8 s as

a)

A. 0.335 µs

b)

B. 33.5 µs

c)

C. 335 µsl

d)

D. 3.35 µs

5.

Which of the following equalities is NOT correct?

a)

A. 1 cm3 – 1 mL

b)

B. 100 cg – 1 g

c)

C. 10 kg – 1 g

d)

D. 1000 mm – 1 m

6.
12 ft= _____ yds
a)
36 yards
b)
12 yards
c)
4 yards
d)
7 yards
7.

Convert a 136 Degrees Fahrenheit to Degrees Celsius:

a)

57.777 oC

b)

330 K

c)

57.5 oF

d)

220 C

8.

If 1 in2 is equal to 645.2 mm2, how may in2 are there in 750 mm2?

a)

483,900 in2

b)

0.86 in2

c)

1.16 in2

d)

none of these

9.

Measuring the mass and volume of a piece of chalk is a way of investigating its ______________.

a)

Physical and intensive properties

b)

Physical and extensive properties

c)

Chemical and extensive properties

d)

Chemical and intensive properties

10.

Which of the following statements describes a chemical property?

a)

An iron bar rust

b)

Ice melts when heated.

c)

The density of iron 7.87 g/cm^3.

d)

Aluminum is a silver-colored metal.

11.
The density of water is 1.0 g. An object that has a density less than the density of water will float. Which of the following materials will float in water?
a)
gold: density of 19.3 g
b)
corn oil: density of 0.9 g
c)
aluminum: density of 2.7 g
d)
steel: density of 7.8 g
12.

Which one is atom?

a)

Na(s)

b)

NaCl(s)

c)

H2O(l)

d)

Br2(l)

13.

Determine the number of neutron for element Cu

a)

63

b)

29

c)

34

d)

92

14.

An element X with a nucleon number of 65 has 35 neutrons in the nucleus. Determine the number of electron in element X ?

a)

100

b)

65

c)

35

d)

30

15.

Protium, deuterium and tritium are_______________

a)

Molecules

b)

Isotopes

c)

Mixtures

d)

Compounds

16.

There are ________ electrons, ________ protons, and ________ neutrons in an atom of Xe.

a)

132, 132, 54

b)

54, 54, 132

c)

78, 78, 54

d)

54, 54, 78

e)

78, 78, 132

17.

The average atomic weight of copper, which has two naturally occurring isotopes, is 63.5. One of the isotopes has an atomic weight of 62.9 amu and constitutes 69.1% of the copper isotopes. The other isotope has an abundance of 30.9%. The atomic weight (amu) of the second isotope is ________ amu.

a)

63.2

b)

63.8

c)

64.1

d)

64.8

e)

28.1

18.
Which of the following is not a property of metals?
a)
brittle
b)
malleable
c)
lustrous
d)
conductive
19.
Which of these elements has the greatest atomic radius? 
a)
H
b)
N
c)
Cl
d)
Cs
20.
The ionization potential of an element is the amount of energy required to remove an electron from an isolated atom or molecule. According to the periodic table, which of the following indicates the correct decreasing order of ionization energy?
a)
Li > Na > K > Cs
b)
Na > K > Li > Cs
c)
Li > K > Na > Cs 
d)
Cs > K > Na > Li 
21.

Which color on the image of the periodic table corresponds with the halogens.

a)

red

b)

black

c)

blue

d)

orange

22.

What is the most reactive nonmetal?

a)

Fluorine

b)

Iodine

c)

Chlorine

d)

Bromine

23.

Mendeleev first ordered the periodic table of elements by increasing

a)

atomic number

b)

atomic mass

c)

atomic symbol

d)

atomic weight

24.

It refers to the "orbit" from Bohr's model of atoms.

a)

Electron Spin Quantum Number

b)

Angular Momentum Quantum Number

c)

Magnetic Quantum Number

d)

Principal Quantum Number

25.

What are the possible values of the electron spin quantum numbers?

a)

1/2 or -1/2

b)

..-2,-1,0,1,2..

c)

0,1,2,3..

d)

s,p,d,f..

26.

Given that n=4 and l=2, what is the name of the subshell?

a)

2f

b)

4d

c)

4p

d)

2d

27.

How many possible orbitals can be found if l=2?

a)

3

b)

4

c)

5

d)

6

28.

If an element has 117 protons which group will it be in on the periodic table?

a)

1

b)

7

c)

11

d)

17

29.

Which element is located in group 3?

a)

Yttrium (Y)

b)

Carbon (C)

c)

Sodium (Na)

d)

Lithium (Li)

30.

Which element is most likely to have six valence electrons?

a)

Barium (Ba)

b)

Carbon (C)

c)

Oxygen (O)

d)

Americium (Am)

31.
Sodium (Na) and potassium (K) are in the same group on the periodic table. Based on their locations, which statement about sodium and potassium is true?
a)
Sodium is less electronegative than potassium. 
b)
Sodium has fewer energy levels than potassium. 
c)
Sodium has a larger ionic radius than potassium. 
d)
Sodium has lower ionization energy than potassium. 
32.
In chemical compounds, covalent bonds form when
a)
the electronegativity difference between two atoms is very large.
b)
electrons are completely transferred between two metals.
c)
pairs of electrons are shared between two nonmetal atoms.
d)
two nonmetal atoms are attracted to each other by opposite charges.
33.
The number of _____ is most important in determining how an atoms will bond. 
a)
Neutrons
b)
Protons
c)
Valence Electrons
d)
Electron sin the innermost shell
34.

______ molecules are found in nature as pairs of two atoms of the same type covalently bonded together.

a)

Diatomic

b)

Monatomic

c)

Polyatomic

d)

Network

35.

Which of the following types of elements can exist in nature as diatomic molecules?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gases.

36.
A substance which has a high melting point, conducts electricity when dissolved in water, and has a crystalline structure probably has what type of bond?
a)
Ionic
b)
Metallic
c)
Covalent
d)
Crystalline
37.
Write the formula for copper (I) phosphide?
a)
Cu3P
b)
CuP
c)
Cu1P
d)
CuP3
38.
Write the formula for vanadium (IV) carbonate
a)
V(CO3)2
b)
V4C
c)
V(CO3)4
d)
V4(CO3)
39.
What is the formula for copper (II) sulfate?
a)
Cu2SO4
b)
CuSO3
c)
CuS
d)
CuSO4
40.
What is the name of BaO?
a)
barium (II) oxide
b)
barium oxide
c)
barium oxygen
d)
barium (I) oxide
41.
Name the following:
Mg3P2
a)
Magnesium Phosphide
b)
Magnesium Phosphorus
c)
Magnamide Phosphide
d)
Magnamide Phosphorus
42.
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
43.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
44.
2 CO (g) + O2(g) → 2 CO2 (g)
In the formation of CO2 from CO and oxygen, how many Liters of CO2 are produced by the reaction of 8 mols of O2 with an excess of carbon monoxide?
a)
0.178 L
b)
358.4 Liters
c)
704 grams
d)
0.36 grams
45.
Cl2 + 2 KBr → Br2 + 2 KCl
How many grams of potassium chloride can be produced from 356 g of chlorine and 356 g of potassium bromide?
a)
749 g
b)
223 g
c)
479 g
d)
814 g
46.
CH4 + 2 O2 → CO2 + 2 H2O
How many moles of carbon dioxide are produced from the combustion of 110 g of CH4?
a)
13.7 mol
b)
2.75 mol
c)
6.11 mol
d)
6.85 mol
47.
Balance this reaction: ____ HCN + ____ CuSO4 ---->____ H2SO4 + ____ Cu(CN)2
a)
2,1,1,2
b)
2,1,1,1
c)
1,2,2,1
d)
1,2,1,1
48.
Balance this reaction: ____ C5H14 + ____ O2 ----> ____ CO2 + ____ H2O
a)
1,8,5,7
b)
2,12,5,14
c)
3,27,15,24
d)
2,17,10,14
49.
_AgNO3 + _Cu--->_Cu(NO3)2 + _Ag
a)
 2 AgNO3 + 2 Cu---> 3 Cu(NO3)2 + 1 Ag
b)
2 AgNO3 + 1 Cu--->  1 Cu(NO3)2 + 2 Ag
c)
1 AgNO3 + 2 Cu--->2 Cu(NO3)2 + 1 Ag
d)
         3 AgNO3 + 2 Cu--->3 Cu(NO3)2 + 2 Ag
50.
When 12 moles of O2 reacts with 1.1 mole of C10H8 what is the limiting reactant?  C10H8 + 12 O2 --> 10 CO2 + 4 H2O
a)
Oxygen
b)
C10H8
c)
Water
d)
Carbon Dioxide

Similar Resources on Wayground

HỌC KÌ 1-12

45 questions

HỌC KÌ 1-12

quiz

Worksheet

•

12th Grade

EOC Review 2016-2017

50 questions

EOC Review 2016-2017

quiz

Worksheet

•

9th - 12th Grade

Module 5 - lesson 1 - Mastery Check (must do)

50 questions

Module 5 - lesson 1 - Mastery Check (must do)

quiz

Worksheet

•

10th - 12th Grade

ÔN TẬP CHƯƠNG 1,2 HÓA 12

50 questions

ÔN TẬP CHƯƠNG 1,2 HÓA 12

quiz

Worksheet

•

12th Grade

9-week exam review

47 questions

9-week exam review

quiz

Worksheet

•

9th - 12th Grade

C3 Atoms and Bonding

50 questions

C3 Atoms and Bonding

quiz

Worksheet

•

6th - 12th Grade

Quantum number

45 questions

Quantum number

quiz

Worksheet

•

11th - 12th Grade