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review for Chemistry S1 Exam 2024

Total questions: 115

Worksheet time: 2hrs 4mins

Name
Class
Date
1.

All atoms of the same element have the same

a)

# of neutons

b)

mass number

c)

atomic number

d)

atomic mass

2.

What is the mass number of an atom with 4 protons, 2 neutrons, and 2 electrons?

a)

8

b)

6

c)

4

d)

2

3.

Which of the three subatomic particles has the lowest mass?

a)

the proton

b)

the electron

c)

the neutron

4.

The atomic number of an element is always equal to the number of (a)   .

5.

What is the atomic mass of radium

a)

226

b)

88

c)

7

d)

138

6.

The atomic mass is the number of ______ and _______.

a)

protons and electrons

b)

protons and isotopes

c)

protons and neutrons

7.

The (a)   is the smallest unit of matter of any element.

8.

The (a)   has a positive charge and is located in the center of the atom.

9.

Any electron in the outermost level of the electron cloud is a(n) (a)   .

10.

What is a negatively charged ion called?

a)

anion

b)

cation

11.

What is a positively charged ion is called?

a)

cation

b)

anion

12.

Atoms of the same element that have a different number of neutrons are called _______.

a)

electrons

b)

protons

c)

isotopes

d)

ions

13.
A phosphorus atom has 15 protons and 16 neutrons. What is the mass number?
a)
15
b)
16
c)
31
d)
1
14.

How many neutrons does an atom of the isotope Neon-22 have? (tap to enlarge the image)

a)

12

b)

10

c)

22

d)

20

15.

What orbital is shown in the picture?

a)

s orbital

b)

p orbital

c)

d orbital

d)

f orbital

16.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
17.
What atom matches this electron configuration?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
18.
What is the shorthand electron configuration for Sulfur atom?
a)
[Ar] 3p4
b)
[He] 3s23p4
c)
[Ne] 3s23p4
d)
[Na] 3s23p3
19.

Each row on the periodic table represents:

a)

an energy level

b)

a sublevel

c)

an electron

d)

an orbital

20.

What element is the most electronegative

a)

chlorine

b)

bromine

c)

iodine

d)

astatine

21.
Which atom has the largest atomic radius?
a)
potassium
b)
rubidium 
c)
francium
d)
cesium
22.

Elements in the same family have similar ___________ and ___________ properties.

a)

Chemical/ Reaction

b)

Physical/ Mental

c)

Chemical/ Physical

d)

Reactions/ Chemical

23.

Group 18 of the periodic table are:

a)

Noble Gases

b)

Alkaline earth metals

c)

Halogens

d)

Alkali Metals

24.

How many elements are in the compound C2H8O ?

a)

2

b)

1

c)

3

d)

0

25.

The number of Sodium (Na) atoms in Na₂CO₃

a)

1

b)

2

c)

3

d)

6

26.

How many total atoms are in the compound C2H8O ?

a)

11

b)

2

c)

8

d)

1

27.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
28.

What is the octet rule?

a)

Elements will have 8 valence in the outermost electron shell

b)

Elements will have 8 protons in the nucleus

c)

Elements will have 8 neutrons on average

d)

Elements must form an octopus like structure

29.

Which of the following elements has a full valence electron shell?

a)

Neon

b)

Iron

c)

Oxygen

d)

Hydrogen

30.

What is a compound?

a)

substance with 2 or more different elements chemically combined

b)

mixture which is evenly distributed throughout

c)

substance with 2 or more elements physically combined

d)

substance containing only one type of element

31.

Mixtures are divided into two classes. What are they?

a)

compounds and substances

b)

heterogeneous and compounds

c)

homogeneous and heterogeneous

d)

homogenous and elements

32.

What is the difference between a chemical change and a physical change?

a)

chemical changes create new substances

b)

physical changes create new substances

c)

chemical changes break apart atoms

d)

physical changes break apart atoms

33.

Odor

a)

Physical Property

b)

Chemical Property

34.

Luster

a)

Physical Property

b)

Chemical Property

35.

Can Neutralize a Base

a)

Physical Property

b)

Chemical Property

36.

Boiling Point

a)

Physical Property

b)

Chemical Property

37.

Hardness

a)

Physical Property

b)

Chemical Property

38.

Reacts with a base to form water

a)

Physical Property

b)

Chemical Property

39.

Reacts with water to form a gas

a)

Physical Property

b)

Chemical Property

40.

Melting Point

a)

Physical Property

b)

Chemical Property

41.

Supports Combustion

a)

Physical Property

b)

Chemical Property

42.

Sour Taste

a)

Physical Property

b)

Chemical Property

43.

Reacts with acid to form hydrogen gas

a)

Physical Property

b)

Chemical Property

44.

Flammability

a)

Physical Property

b)

Chemical Property

45.

Density

a)

Physical Property

b)

Chemical Property

46.

Blue Color

a)

Physical Property

b)

Chemical Property

47.
What is the definition of a physical change?
a)
Alteration in the physical state of matter without changing its chemical composition
b)
Inherent characteristics that help us identify and describe matter
c)
Characteristics that describe how a substance behaves under different conditions
d)
Transformation that results in the creation of new substances
48.

Which of the following is an example of a physical change?

a)
rusting iron
b)
burning wood
c)
melting ice
d)
cooking an egg
49.
Which of the following is an example of a physical property?
a)
Ability to rust
b)
Ability to burn
c)
Ability to conduct electricity
d)
Ability to react with oxygen
50.
What happens to the fundamental particles during a chemical change?
a)
They remain the same
b)
They break and form new chemical bonds
c)
They become completely different substances
d)
They disappear
51.

sugar + pure water

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

52.

iron filings (Fe)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

53.

limestone (CaCO3)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

54.

orange juice (juice and pulp)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

55.

Pacific Ocean (Water, Salt, Coral, Fish)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

56.

air

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

57.

magnesium (Mg)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

58.

acetylene (C2H2)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

59.

pure water (H2O)

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

60.

soil

a)

Element

b)

Compound

c)

Heterogeneous Mixture

d)

Homogeneous Mixture

61.

Long hair in the laboratory must be

a)

held away from the experiment with one hand.

b)

tied back or kept entirely out of the way with a hair band, etc.

c)

cut short

d)

always neatly groomed.

62.
What should you do if you break glass in the lab?
a)
Tell the teacher.
b)
Sweep up the glass.
c)
Pick up the glass with your hands.
d)
Ignore it; the teacher will clean it up when she sees it later.
63.

Identify the beaker.

a)
b)
c)
d)
64.

Keeping your work area and floor neat and clean is important because:

a)

my teacher is a neat freak

b)

it keeps the room from looking messy

c)

I won't lose my supplies in the clutter.

d)

It helps prevent accidents.

65.

Return all unused chemicals to their original containers.

a)

True

b)

False

66.

Which would you do to change this Lithium to a new element?

a)

Add a neutron

b)

Add an electron

c)

Add a proton

d)

Add a proton and neutron\

67.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
68.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

69.
Adding or subtracting neutrons (charge = 0, mass = 1) makes the element change into an...
a)
ion
b)
mixture
c)
isotope
d)
neutral atom
70.
Which atom has  4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
71.

How many protons, neutrons, and electrons?

a)

proton = 16, neutron = 8, electron = 10

b)

proton = 8, neutron = 16, electron = 8

c)

proton = 8, neutron = 8, electron = 10

d)

proton = 6, neutron = 2, electron = 6

72.

How many protons, neutrons, and electrons?

a)

proton = 6, neutron = 4, electron = 1

b)

proton = 4, neutron = 4, electron = 5

c)

proton = 1, neutron = 6, electron = 10

d)

proton = 4, neutron = 2, electron = 3

73.
4.35% of all X atoms have a mass of 39.946 amu. 83.79% have a mass of 41.941 amu, 9.50% have a mass of 42.941 amu, and 2.36% have a mass of 43.939 amu. What is the average atomic mass of atom X?
a)
41.97 amu
b)
42.19 amu
c)
10.43 amu
d)
40.04 amu
74.
Compute the average atomic mass for silicon:
a)
27.977
b)
28.09
c)
28.976
d)
The average mass cannot be determined from provided information.
75.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
76.
Four isotopes of lead include lead-204, lead-206, lead-207, and lead-208.  The average atomic mass of lead is 207.2.  Which isotope of lead is likely to be the most abundant.
a)
204
b)
206
c)
207
d)
208
77.
What group on the Periodic Table contains the elements of the alkaline earth family?
a)
1
b)
2
c)
17
d)
18
78.

The elements in this family are soft, silvery, and very reactive with water.

a)

Alkaline Earth Metals

b)

Alkali Metals

c)

Transition Metals

d)

Lanthanides

79.
Which element is not in the Alkali metal family?
a)
Li
b)
H
c)
Fr
d)
Cs 
80.
Which of the following is the most reactive group of non-metals? 
a)
Alkali
b)
Alkali Earth
c)
Halogen
d)
Noble Gas
81.

The is family has properties of both metals and nonmetals.

a)

Alkali

b)

Halogens

c)

Nonmetals

d)

Metalloids

82.

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

a)

red

b)

black

c)

blue

d)

orange

83.

Which color on the image of the periodic table corresponds with the alkaline earth metals.

a)

yellow

b)

dark yellow

c)

blue/green

d)

teal

84.

Horizontal rows on the periodic table are called ___?

a)

groups

b)

periods

c)

rows

d)

families

85.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
86.
Which of the following is a Halogen? 
a)
Bromine
b)
Rubidium
c)
Argon
d)
Beryllium
87.

Which family of elements does not combine with other elements unless under special conditions in a laboratory?

a)

Noble gases

b)

Halogens

c)

Metalloids

d)

Alkaline earth metals

e)

Actinides

88.

What element is so unique it doesn't belong to any family?

a)

He

b)

H

c)

F

d)

O

89.

What is the element symbol for the element found in the 3rd period, group 15?

(a)  

90.

What is the element symbol for the element found in the period 6, group 5?

(a)  

91.

What is the element symbol for the element found in the period 4, group 2?

(a)  

92.

What is the element symbol for the last element in the Lanthanide series?

(a)  

93.

Atomic radius generally increases as we move __________.  

a)
down a group and from right to left across a period 
b)
up a group and from left to right across a period 
c)
down a group and from left to right across a period 
d)
up a group and from right to left across a period 
94.

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

a)
decreases, increases 
b)
increases, increases
c)
increases, decreases 
d)
stays the same, increases
95.

Which has the greater ionization energy?

a)

S

b)

Sc

c)

Se

d)

Sb

96.
What is the electronic configuration of iron?
a)
1s22s22p63s23p64s23d6
b)
1s22s22p63s23p63d8
c)
1s22p63s23p64s23d6
d)
1s22s22p63s23p64s13d6
97.
As you move down a group, atomic radius increases because - 
a)
you add more and more neutrons
b)
you add more and more protons
c)
you add more and more shells (energy levels)
d)
you add more atomic mass
98.
As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 
a)
the number of protons increases, so attraction to electrons increases
b)
the number of energy levels increases
c)
the number of electrons increases
d)
the atomic mass increases
99.
Francium (Fr) has the lowest ionization energy in Group 1 because - 
a)
it has the smallest number of valence electrons
b)
it has the greatest atomic mass
c)
it has the greatest number of protons, so it attracts its electrons the strongest
d)
its 1 valence electron is very far from the nucleus, so little energy is needed to remove it
100.

What element has the following electron configuration?

1s22s22p63s23p64s23d104p65s1

a)

Rubidium (Rb)

b)

Halfnium (Hf)

c)

Aluminum (Al)

d)

Potassium (K)

101.
Which electron configuration belongs to Copper (Cu)?
a)
1s2 2s2 2p6 3s2 3p6 4s2 3d8
b)
1s2 2s2 2p6 3s2 3p6 4s2 3d9
c)
1s2 2s2 2p6 3s2 3p6 4s2 3d10
102.

What element has the following electron configuration:

1s22s22p63s23p64s23d104p5

a)

Bromine (Br)

b)

Chlorine (Cl)

c)

Calcium (Ca)

d)

Manganese (Mn)

103.
Which of the following is a p block element?
a)
Ca
b)
Ar
c)
Re
d)
Au
104.
What element in Period 4 has 5 valence electrons?
a)
Zr
b)
As
c)
V
d)
Sb
105.

Choose the correct shortcut configuration for iodine.

a)

[Ar]4s24d104p5

b)

[Kr]5s24d105p5

c)

[Xe]5s25d105p5

d)

none of the above

106.

What is the noble gas configuration for Cobalt?

a)

[Kr] 4s2 3d7

b)

[Kr] 4s2 4d7

c)

[Ar] 4s2 3d7

d)

[Ar] 4s2 4d7

107.
Identify the element for
[Xe] 6s2 4f14 5d4
a)

Chromium

b)

Molybdenum

c)

Tungsten

d)

Seaborgium

108.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

109.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
110.

This is a correct dot diagram for nitrogen (N)

a)

true

b)

false

111.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

112.

This is a correct dot diagram for carbon (C)

a)

true

b)

false

113.

Which of these is in group 2?

a)
b)
c)
d)
114.

What is the goal of the Lewis Dot Structure?

a)

To determine the electron position.

b)

To show the element's valence electrons & bonding capabilities.

c)

To find the atomic mass of an element.

d)

To search for the number of electrons in an individual atom.

115.

What is a Lewis Dot Structure?

a)

It shows all of the particles in the atom.

b)

Contains protons and neutrons

c)

Only shows the element symbol and it's outer most electron shell

d)

Contains protons and electrons

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