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Atoms Molecules Isotopes Periodic Table

Total questions: 105

Worksheet time: 3570secs

Name
Class
Date
1.
A proton is a _____ charged particle.
a)
Negatively
b)
Positively
2.
An electron has a _____ charge.
a)
negative
b)
positive
c)
neutral
3.
What number on the element key tells you how many protons an element has?
a)
Atomic Mass
b)
Element name
c)
Atomic number
d)
Element Symbol
4.
Which particles make up the nucleus of an atom?
a)
protons and neutrons
b)
electrons and protons
c)
electrons, protons, and neutrons
d)
electrons and neutrons
5.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
6.
Elements can have the same number of protons?
a)
True
b)
False
7.
What is the charge of the neutron?
a)
Negative
b)
Positive
c)
electrical charge
d)
Neutral (no charge)
8.
The following element key shows how many protons?
a)
16
b)
15.999
c)
Oxygen
d)
8
9.
What is the formula to solve for the neutron?
a)
Mass + Atomic Number= Neutrons
b)
Mass x Atomic Number = Neutrons
c)
Mass - Atomic Number = Neutrons
d)
Mass + Number of Protons = Neutron
10.
Where is the neutron located?
a)
In the loose nucleus with the electron
b)
In the dense nucleus with the protons
c)
In the electron cloud
d)
The nucleus floats on orbitals
11.
How many neutrons does oxygen have?
a)
16
b)
15.99
c)
8
d)
Doesn't contain any neutrons
12.
The subatomic particle that determines the identity of an element.
a)
neutron
b)
proton
c)
electron
d)
outer shell
13.
In an atom, what is the number of protons equal to?
a)
The number of electrons.
b)
The number of neutrons.
c)
The number of molecules.
d)
The number of nuclei.
14.
How many neutrons does an element have with the atomic number of 36?
a)
36
b)
84
c)
48
d)
18
15.

What goes in place of the question marks?

a)

Element name

b)

Atomic Mass

c)

Atomic Number

d)

Electrons

16.

An atom has 3 protons, 4 neutrons, and 3 electrons. What is the charge of the atom’s nucleus?

a)

+4

b)

+3

c)

−4

d)

−3

17.
What is the atomic number of the atom pictured? 
a)
11
b)
12
c)
22
d)
23
18.

How many protons, electrons and neutrons are present in an atom of carbon, C, with the mass of 12?

a)

12 protons, 12 electrons, 12 neutrons

b)

6 protons, 12 electrons, 6 neutrons

c)

12 protons, 6 electrons, 12 neutrons

d)

6 protons, 6 electrons, 6 neutrons

19.
What is the atomic mass of the atom pictured? 
a)
11
b)
12
c)
22
d)
23
20.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
21.

How would you write the isotope name from this nuclide symbol?

a)

Sodium-23

b)

Sodium-11

c)

Sodium-12

d)

Sodium-22

22.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
23.

How many neutrons are in the isotope of sulfur,36S?

a)

16

b)

20

c)

24

d)

26

24.

Which of the following does NOT differ in isotopes of the same element?

a)

mass number

b)

number of neutrons

c)

number of protons

d)

chemical properties

25.

How many neutrons are in the following atom?

a)

47

b)

61

c)

108

d)

155

26.

How many protons are in the following atom?

a)

82

b)

125

c)

207

d)

189

27.
What is the name of the pictured isotope?
a)
Chlorine-Schmorine
b)
Chlorine-17
c)
Chlorine-35
d)
Chlorine-18
28.

What isotope is shown here? (Red = protons, gray = neutrons, blue = electrons)

a)

Beryllium-5

b)

Beryllium-9

c)

Boron-4

d)

Boron-9

29.
An atom is electrically neutral when
a)
protons and neutrons are the same
b)
protons and electrons are the same
c)
neutrons and electrons are the same
30.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)

47

31.

These three isotopes of carbon have different -

a)

Atomic numbers

b)

Mass numbers

c)

Numbers of protons

d)

Symbols

32.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
33.

Which of these determines the identity of an atom?

a)

proton

b)

neutron

c)

valence electron

d)

protons and neutrons

34.

_______ are atoms with the same number of protons but varying numbers of neutrons.

a)

ions

b)

elements

c)

allotropes

d)

isotopes

35.

What is a mass number?

a)
The average atomic mass
b)
the number of protons and neutrons in the nucleus
c)
the number of protons in the nucleus
d)
the number of protons and electrons in the nucleus
36.

Which of these pairs of atoms are isotopes?

a)

pair A

b)

pair B

c)

pair C

37.

What is the correct hyphen notation name for the isotope with 19 electrons and 21 neutrons?

a)

Potassium-40

b)

Scandium-19

c)

Potassium-21

d)

Scandium-40

38.

Determine the number of neutrons in the following isotope:

(a)  

39.

How many electrons are in a neutral atom of the isotope fluorine-20?

a)

20

b)

9

c)

19

d)

18

40.

What is the name of the isotope with 54 protons and 79 neutrons?

a)

Xenon-79

b)

Gold-79

c)

Gold-133

d)

Xenon-133

41.

The order of elements in the periodic table is based on

a)

the number of protons in the nucleus.

b)

the electric charge of the nucleus.

c)

the number of neutrons in the nucleus.

d)

atomic mass.

42.

Which of the following elements is an alkali metal?

a)

calcium

b)

magnesium

c)

mercury

d)

sodium

43.

In Mendeleev's periodic table, elements in each column had similar

a)

atomic masses.

b)

properties.

c)

atomic numbers.

d)

symbols.

44.

How was Mendeleev's periodic table arranged?

a)

by increasing atomic mass

b)

by decreasing atomic mass

c)

by increasing atomic number

d)

by decreasing atomic number

45.

Mendeleev left gaps in his periodic table because

a)

the table was too small.

b)

protons belonged there.

c)

the table was too full.

d)

no known elements fit there.

46.

Each column of the periodic table is

a)

an element.

b)

a group.

c)

an isotope.

d)

a period.

47.

Most elements are

a)

metals.

b)

nonmetals.

c)

metalloids.

d)

semiconductors.

48.

Which statement about the alkali metals is correct?

a)

They are located in the left-most column of the periodic table.

b)

They are extremely nonreactive.

c)

They are usually gases.

d)

They form negative ions with a 1- charge.

49.

Metals tend to be

a)

gases.

b)

dull.

c)

brittle.

d)

good conductors.

50.

Which group is very stable due to the fact that they have a full outermost energy level?

a)

alkali metals

b)

halogens

c)

alkaline-earth metals

d)

noble gases

51.

atomic number

a)

gas at room temperature, low boiling point

b)

a subatomic particle that has a negative charge

c)

number or protons and neutrons

d)

the number of protons in the nucleus of an atom

52.
A ___________ is an arrangement of elements in columns
a)
columns
b)
rows
c)
periodic table
d)
electron shell
53.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
54.
Which element is not a metal?
a)
H
b)
Re
c)
Al
d)
B
55.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
56.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
57.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
58.
A vertical column in the periodic table.  Elements share similar properties.
a)
row
b)
group
c)
period
59.
A proton is....
a)
A negatively charged subatomic particle
b)
A positively charged subatomic particle
c)
A neutrally charged subatomic particle
d)
The only subatomic particle located in the nucleus
60.
A neutron has a charge of
a)
+2
b)
No charge
c)
-1
d)
+1
61.

Which group of the periodic table are alkali metals found in?

a)

Group 1

b)

Group 2

c)

Group 7

d)

Group 8

62.

Which of the followings is not an alkali metal?

a)

Li

b)

Cl

c)

K

d)

Cs

63.

How many electrons do the alkali metals have in their outer most shell?

a)

1

b)

2

c)

8

d)

7

64.

Which of the followings is the most reactive alkali metal in water?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Hydrogen

65.

What is formed when sodium reacts with water?

a)

Sodium oxide and hydrogen

b)

Sodium hydroxide and hydrogen

c)

Sodium hydroxide and oxygen

d)

Sodium hydroxide and carbon dioxide

66.

What is the symbol equation for the reaction between potassium and water?

a)

2K + 2H2O → 2KOH + H2

b)

2Na + 2H2O → 2NaOH + H

c)

2K + H2O → 2KOH + CO2

d)

2Na + 2H2O → 2NaOH + CO2

67.

What happens to the atomic radius of the alkali metals as going down the group?

a)

increases

b)

decreases

c)

no change

d)

first increases than decreases

68.

What happens to the melting point of the alkali metals as going down the group?

a)

decreases

b)

increases

c)

no change

d)

first increases than decreases

69.

Which alkali metals is the least reactive?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Rubidium

70.

What is the general formula of a group 1 metal oxide?

a)

M2O

b)

MO

c)

MO2

d)

Mo

71.

Alkali are so reactive to air. Because of that they are generally stored in ......

a)

water

b)

paraffin oil

c)

vaults

d)

cotton

72.

Which alkali metal burns in oxygen to produce lilac flame?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Rubidium

73.

.................. is released when alkali metals react with water.

a)

Hydrogen

b)

Oxygen

c)

Metahne

d)

Carbon dioxide

74.

What kind of solution is produced when group 1 metals react with water?

a)

Neutral

b)

Acidic

c)

Alkaline

d)

Ionized

75.

Which alkali metal is very important for battery industry?

a)

Fr

b)

Na

c)

Li

d)

Cs

76.

Which halogen is the most reactive?

a)

Fluorine

b)

Chlorine

c)

Bromine

d)

Iodine

77.

Describe the reactivity of Group 7 (halogens) elements as you go down the group?

a)
Reactivity remains constant as you go down the group.
b)
Reactivity decreases as you go down the group.
c)
Reactivity increases as you go down the group.
d)
Reactivity is not affected by the group position.
78.

How many electrons to halogens have in their outer shell?

a)
10
b)
7
c)
8
d)
5
79.

Complete the following equation: Chlorine + Potassium Bromide -->

a)

Potassium Chloride + Bromine

b)

Chlorine + Potassium Bromide

c)

No reaction

80.

Which halogen is the least reactive?

a)

Fluorine

b)

Chlorine

c)

Bromine

d)

Iodine

81.

Complete the following equation: Iodine + Potassium Bromide -->

a)

Potassium Iodine + Bromine

b)

Iodine + Potassium Bromide

c)

No reaction

82.

Complete the following equation: Bromine + Potassium Iodide -->

a)

Potassium Iodine + Bromine

b)

Iodine + Potassium Bromide

c)

No reaction

83.

Complete the following equation: Chlorine + Potassium Iodide -->

a)

Potassium Iodine + Chlorine

b)

Iodine + Potassium Chloride

c)

No reaction

84.

Complete the following equation: Iodine + Potassium Iodide -->

a)

Potassium Iodine + Bromine

b)

Iodine + Potassium Chloride

c)

No reaction

85.

What happens when fluorine reacts with sodium?

a)

They form sodium fluoride.

b)

They form sodium chlorate.

c)

No reaction occurs.

d)

They form sodium and fluorine gas.

86.

Which of the "Halogens" is found in liquid state at room temperature?

a)

Flourine

b)

Astatine

c)

Iodine

d)

Bromine

87.
At room temperature, iodine is a....
a)
Gas
b)
Liquid
c)
Solid
88.
At room temperature, chlorine is...
a)
a yellow-green gas
b)
a brown gas
c)
a yellow-green liquid
89.

As you move down the group, halogens' reactivity...

a)

increases

b)

decreases

c)

doesn't change

d)

shows no trend.

90.

Which halogens can displace bromide ions to make bromine?

a)

Fluorine and iodine.

b)

Fluorine and bromine.

c)

Fluorine and chlorine

d)

Chlorine and iodine.

91.

A displacement reaction involves...

a)

a solution turning brown or yellow.

b)

a less reactive element taking the place of a more reactive element.

c)

a dislocated hip.

d)

a more reactive element taking the place of a less reactive element.

92.
What type of ions do the Group 7 elements make?
a)
positive 2 (+2)
b)
positive 1 (+1)
c)
negative 1 (-1)
d)
negative 2 (-2)
93.

Would a displacement reaction occur for Bromine + Potassium Iodide?

a)

Yes

b)

No

c)

Maybe

94.

How many electrons do the halogens all have in their outer shells?

a)

1

b)

2

c)

7

d)

8

95.

The Halogens are found in which group number?

a)

5

b)

6

c)

7

d)

0

96.

Would a displacement reaction occur for Iodine + Potassium Bromide?

a)

Yes

b)

No

c)

Maybe

97.

As you go down the group, how does the boiling point of the halogen elements change?

a)

Increases

b)

Decreases

c)

They're all about the same

98.

Which of the "Halogens" has yellowish green color?

a)

Chlorine

b)

Bromine

c)

Flourine

d)

Iodine

99.

Which halogen would be able to replace chlorine in sodium chloride?

a)

Flourine

b)

Bromine

c)

Iodine

d)

Astatine

100.

Which statement is true about halogens?

a)

Form covalent compounds with other non-metallic elements

b)

A less reactive halogen will displace a more reactive element form its ionic salt

c)

Form ionic compound with hydrogen

d)

form negative ion of charge -2

101.

The process by which solid iodine particles change directly to gas without first becoming a liquid is called ____.

a)

evaporation

b)

ionization

c)

condensation

d)

sublimation

102.

Which of the following is / are not a gas at room temperature

a)

fluorine

b)

bromine

c)

iodine

d)

chlorine

103.

Which of the following is the most unreactive

a)

fluorine

b)

bromine

c)

iodine

d)

chlorine

104.

Which of the following is black

a)

fluorine

b)

bromine

c)

iodine

d)

chlorine

105.

Which of the following is explosive

a)

fluorine and hydrogen

b)

chlorine and hydrogen

c)

iodine and hydrogen

d)

bromine and hydrogen

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