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Chem Review Part 2 (1W)

Total questions: 100

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

Which part of the atomic theory did Niels Bohr prove?

a)

there are electrons

b)

there is a nucleus

c)

electrons are in energy levels

d)

gold foil experiment

2.

Which part of the atomic theory did JJ Thomson prove?

a)

there are electrons

b)

electrons are in energy levels

c)

there is a nucleus

d)

cathode ray tube

3.

What experiment did JJ Thomson use?

a)

gold foil experiment

b)

cathode ray tube experiment

4.

John Dalton wrote postulates to make the idea of the atom useful. Which postulate below was proven wrong?

a)

All elements are made up of tiny indivisible particles called atoms.

b)

The atoms of one element are different from the atoms of another element.

c)

Atoms of different elements chemically combine to form chemical compounds.

d)

During chemical reactions, atoms are rearranged.

5.

JJ Thomson came up with which model for the atom?

a)

planetary model

b)

electron cloud model

c)

plum pudding model

d)

nuclear model

6.

Which statement is incorrect?

a)

The nucleus is very dense.

b)

The nucleus contains protons and neutrons.

c)

The nucleus is positively charged.

d)

The nucleus is involved in chemical reactions.

7.

The number of protons is equal to the number of electrons for an atom. This means an atom is-

a)

electrically neutral

b)

electrically positive

c)

electrically negative

8.

What determines chemical reactivity?

a)

protons

b)

neutrons

c)

electrons

d)

isotopes

9.

Which subatomic particle has a neutral charge?

a)

protons

b)

neutrons

c)

electrons

d)

isotope

10.

What are atoms with the same number of protons but different numbers of neutrons?

a)

electrons

b)

protons

c)

neutrons

d)

isotopes

11.

After Rutherford discovered the nucleus, which model is believed to be true?

a)

protons, neutrons, and electrons are evenly distributed

b)

the nucleus is made of protons, neutrons, and electrons

c)

the nucleus is made of protons and electrons

d)

the model is mostly empty space with a central nucleus

12.

Which describes the same atomic number but different numbers of neutrons?

a)

ions

b)

isotopes

c)

atoms

d)

neutrons

13.

These are used to identify the element:

a)

protons

b)

neutrons

c)

electrons

d)

ions

14.

Which particles form the nucleus of the atom?

a)

protons and electrons

b)

protons and neutrons

c)

electrons and ions

d)

electrons and neutrons

15.
The scientist responsible for "discovering" the nucleus is:
a)
Bohr
b)
Rutherford
c)
Schroedinger
d)
Einstein
16.
The nucleus of an atom can be described as:
a)
spacious and negatively charged
b)
dense and positively charged
c)
spacious and positively charged
d)
dense and negatively charged
17.
Electrons are not factored into atomic mass because:
a)
They are so small their mass is negligible
b)
They're not in the nucleus
c)
They're too big
d)
They move so quickly their mass is zero
18.
How did Rutherford discover the proton?
a)
Cathode tube ray experiment
b)
Gold Foil Experiment
c)
Planetary Model
d)
Plum Pudding Model
19.
Atoms are made up of three basic parts, which are -
a)
Protons, neutrons, electrons
b)
neutrinos, protons, neutrons
c)
quarks, protons, electrons
d)
electrons, neutrons, and quarks
20.
Protons have this charge -
a)
positive
b)
negative
c)
neutral
d)
no charge
21.
Electrons have this charge - 
a)
positive
b)
negative
c)
neutral
d)
no charge
22.
Neutrons have this charge -
a)
positive
b)
negative
c)
neutral
d)
They don't exist
23.
Place the following scientists in order, from earliest to latest: 
A) Ernest Rutherford
B) J.J. Thomson
C) John Dalton
a)
B,C,A
b)
C,A,B
c)
A,C,B
d)
C,B,A
24.
An atom's overall charge is ________.
a)
positive 
b)
depends
c)
neutral 
d)
negative 
25.
J.J. Thomson provided evidence that an atom...
a)
is the smallest particle of matter
b)
contains negatively charged particles
c)
has an overall negative charge
d)
has an overall positive charge
26.
Rutherford's gold foil experiment provided evidence that...
a)
negative and positive charges are spread evenly throughout the atom.
b)
alpha particles have a positive charge.
c)
gold is not a dense as previously thought.
d)
there is a dense positively charged nucleus at the center of an atom.
27.
Ernst Rutherford discovered which part of the atom through the use of gold foil?
a)
Proton
b)
Neutron
c)
Electron
d)
Orbitals
28.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
None of these
29.
What element is represented in this Bohr Model? 
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
30.
What group does this element belong to?
a)
Group 1: Alkali metals
b)
Group 18: Noble Gases
c)
Group 2: Alkaline-Earth Metals
d)
Group 17: Halogens
31.
What is the center of the atom called?
a)
Orbital
b)
Nucleus
c)
Proton
d)
Electron shell
32.

What's a valence electron?

a)

electrons in the second orbital

b)

electrons in the outermost shell of an atom

c)

the atomic number

d)

electrons in the first energy level

33.

This Bohr diagram shows 3 orbits (shells) with electrons. To which row of the Periodic Table does it belong?

a)

1

b)

2

c)

3

d)

4

34.

Which row of the Periodic Table must this element come from?

a)

1

b)

2

c)

3

d)

4

35.

How many electrons total?

a)

5

b)

6

c)

7

d)

8

36.

How many valence electrons?

a)

2

b)

3

c)

4

d)

5

37.

Which period is this element in?

a)

1

b)

2

c)

3

d)

4

38.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
39.

Which element would be in group 16?

a)

V

b)

W

c)

X

d)

Y

e)

Z

40.

How many valence (outer) electrons does an Oxygen atom have?

a)

2

b)

6

c)

8

d)

16

41.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
42.
If my charge becomes 2+ what does that say about me?
a)
I am stealing 2 electrons
b)
I am losing 2 electrons
c)
I am in period 2
d)
I have an atomic # of 2
43.
If I gain electrons I become
a)
Positive because I've added to my atom
b)
negative because I've added electrons
c)
same because i'm balanced
d)
equal because now I have electrons
44.
All elements in the same group have the same number of ___.
a)
protons
b)
neutrons
c)
atomic mass units
d)
valence electrons
45.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
46.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
47.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
48.

Semiconductors, or metalloids, can be described as...

a)

same as nonmetals

b)

bad conductors

c)

characteristics of metals and nonmetals

d)

same as metals

49.

Which of the following elements is a semiconductor?

a)

Boron

b)

Aluminum

c)

Lead

d)

Bismuth (Bi)

50.
Which element has 2 energy shells and 3 valence electrons
a)
Si
b)
B
c)
Li
d)
He
51.
How many energy shells does Barium (Ba) have?
a)
1
b)
2
c)
5
d)
6
52.
Lithium (Li) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
Noble gases
53.
Chlorine (Cl) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens 
d)
noble gases
54.
Chlorine (Cl) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens 
d)
noble gases
55.
Magnesium (Mg) is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
56.
Neon is part of the _ family.
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
57.
Which group of elements have the most reactive nonmetals?
a)
metalloids
b)
halogens
c)
alkali metals
d)
noble gases
58.

Which of the following are found on the left side of the zig zag line on the periodic table?

a)

Non-metals

b)

metalloids

c)

metals

d)

compounds

59.

_________________________ are the rows on the periodic table while _______________________ are the columns.

a)

periods/ groups(families)

b)

groups(families)/periods

c)

metals/non-metals

d)

non-metals/metals

60.

Which of the following elements is in (period 4 , group 2)

a)

Carbon

b)

Potassium

c)

Calcium

d)

Sodium

61.

Which of the following has similar properties as oxygen?

a)

Sulfur

b)

Nitrogen

c)

Fluorine

d)

Carbon

62.
What element is will have the most similar physical and chemical properties to the element Bromine (Br)?
a)

Fluorine

b)

Selenium

c)

Krypton

d)

Mercury

63.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
64.
Which of the following will have a larger radius than Zinc?
a)
Gallium
b)
Aluminum
c)
Magnesium
d)
Strontium
65.

The atomic radius across period

a)

decrease from left to right

b)

Increase from left to right

c)

decrease from right to left

d)

stay the same

66.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
67.

Mendeleev's periodic table was unique because...

a)

It was made in Russia

b)

It predicted undiscovered elements

c)

It was organized by mass

d)

It did not include nobel gases

68.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
69.
The yellow atoms are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
70.
The majority of elements on the periodic table are
a)
man made.
b)
nonmetals.
c)
metals.
d)
gases.
71.

Good conductor of heat and electricity

a)

Metal

b)

Nonmetal

72.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
73.
Metalloids can be described as...
a)
same as nonmetals
b)
bad conductors
c)
characteristics of metals and nonmetals
d)
same as metals
74.

How many elements are in this chemical formula?

H2SO4H_2SO_4  

a)

1

b)

2

c)

3

d)

4

75.

How many atoms of Carbon are in this formula? C6 H12O6C_{6\ }H_{12}O_6  

a)

6

b)

1

c)

12

76.

What is the total number of atoms in this formula? H2O2H_2O_2  

a)

2

b)

4

c)

3

77.

Which of the following elements is least likely to form a compound?

a)

Hydrogen

b)

Sodium

c)

Argon

d)

Potassium

78.

Which chemical formula correctly displays 1 atom of nickel and 2 atoms of Fluorine?

a)

niF2

b)

NIF2

c)

Ni1F2

d)

NiF2

79.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
80.

How many Magnesium atoms are in 10MgCl2?

a)

10

b)

5

c)

20

81.

How many Nitrogen atoms are in (NH₄)₂CrO₄?

a)

1

b)

2

c)

8

d)

16

82.

Calculate the number of Oxygen atoms in Al(OH)3

a)

1

b)

2

c)

3

d)

4

83.

The ______ are numbers found on the lower right-hand side of an element symbol.

a)

Coefficient

b)

Exponent

c)

Multiplier

d)

Subscript

84.

4CF2Cl2

a)

C = 4, F = 4, Cl = 2

b)

C = 1, F = 8, Cl = 8

c)

C = 4, F = 8, Cl = 8

d)

C = 1, F = 4, Cl = 8

85.

C3H5(NO3)3

a)

C = 3, H = 5, N = 3, O = 9

b)

C = 3, H = 5, N = 1, O = 9

c)

C = 9, H = 15, N = 3, O = 9

d)

C = 9, H = 15, N = 1, O = 3

86.

How many different elements are present in this molecule?

3 NH4C2H3O2

a)

15

b)

36

c)

5

d)

4

87.

A ______ is a number written in front of a chemical formula.

a)

Coefficient

b)

Subscript

c)

Exponent

d)

Coordinator

88.

Which is the correct molecular structure for 2F2?

a)
b)
c)
d)
89.

Which is the correct molecular structure for 2NH3?

a)
b)
c)
d)
90.

Which is the correct molecular structure for 2CH3Cl?

a)
b)
c)
d)
91.
Which two groups on the Periodic Table are the MOST reactive?
a)
Group 1 and Group 17
b)
Group 2 and Group 16
c)
Group 13 and Group 15
d)
Group 17 and Group 18
92.
How many valence electrons are elements trying to reach in their outer shells?
a)
1
b)
2
c)
5
d)
8
93.
What determines the reactivity of an element?
a)
Size of its nucleus
b)
Number of total electrons
c)
Number of valence electrons
d)
Number of shells
94.
How do you determine the number of valence electrons an element has?
a)
Look at its period
b)
Look at its group
c)
Look at its atomic number
d)
Look at its atomic mass
95.

Atoms on which side of the periodic table will tend to LOSE electrons?

a)
Right
b)
Left
c)
Middle
d)
No atoms lose electrons
96.

What will an atom of potassium (K) do to achieve a full valence shell?

a)

Gain 1 electron

b)

Lose 1 electron

c)

Lose 2 electrons

d)

It already has a full valence shell

97.

What will an atom of phosphorus (P) do to achieve a full valence shell?

a)

Gain 3 electrons

b)

Lose 3 electrons

c)

Gain 2 electrons

d)

Lose 2 electrons

98.

Which of the following elements is moderately reactive?

a)

Argon

(Ar)

b)

Bromine

(Br)

c)

Sodium

(Na)

d)

Sulfur

(S)

99.

Most metals share four common physical characteristics. Which of the options is not one of the four?

a)

Luster

b)

Conductivity

c)

Ductility

d)

Malleability

e)

Reactivity

100.

Which element is similar to Mg?

a)

Ca

b)

B

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