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Unit 7 Atomic Structure

Total questions: 81

Worksheet time: 50mins

Name
Class
Date
1.

Who first named the atom?

a)

Democritus

b)

Aristotle

c)

Dalton

d)

Newton

2.

Who was Democritus?

a)

A famous Greek philosopher

b)

A Roman emperor

c)

An Egyptian pharaoh

d)

A Persian king

3.

First person to work on the periodic table.

a)

Dmitri Mendeleev

b)

Albert Einstein

c)

Isaac Newton

d)

Marie Curie

4.

Mendeleev is known as:

a)

The inventor of the telephone

b)

The creator of the periodic table

c)

A famous painter

d)

A renowned mathematician

5.

Who came up with the model that says electrons travel in fixed orbits around the nucleus?

a)

Niels Bohr

b)

Albert Einstein

c)

Ernest Rutherford

d)

James Chadwick

6.

Who is Bohr?

a)

A famous painter

b)

A physicist known for the atomic model

c)

An ancient philosopher

d)

A mathematician

7.

What experiment did Rutherford use to develop his Nuclear Model?

a)

Gold foil experiment

b)

Oil drop experiment

c)

Cathode ray experiment

d)

Photoelectric effect experiment

8.

JJ Thomson’s Plum Pudding Model explains that:

a)

Atoms are indivisible and indestructible.

b)

Electrons are embedded in a positively charged sphere.

c)

Electrons revolve around the nucleus in fixed orbits.

d)

Atoms have a dense nucleus at the center.

9.

Which atomic model is described by the statement: 'The atom is positively charged with negative particles embedded throughout'?

a)

Bohr Model

b)

Plum Pudding Model

c)

Rutherford Model

d)

Quantum Mechanical Model

10.

Subatomic particle that has a positive charge.

a)

Proton

b)

Electron

c)

Neutron

d)

Photon

11.

Protons are subatomic particles found in the nucleus of an atom and have a _______ charge.

a)

positive

b)

negative

c)

neutral

d)

no

12.

What is the charge of a neutron?​ ​ ​ (a)  

Choose from the below words

neutral

positive

negative

13.

What charge does the number 0 represent?

a)

Positive

b)

Negative

c)

Neutral

d)

Unknown

14.

What are the particles that make up protons and neutrons?

a)

Quarks

b)

Electrons

c)

Photons

d)

Neutrinos

15.

How many electrons can be held in the first energy level?

a)

2

b)

4

c)

8

d)

6

16.

Which subatomic particle is not found in the nucleus of an atom?

a)

Proton

b)

Neutron

c)

Electron

d)

All of the above are found in the nucleus

17.

What does the atomic number of an element represent?

a)

The number of protons in the nucleus

b)

The number of neutrons in the nucleus

c)

The total number of protons and neutrons in the nucleus

d)

The total number of protons and electrons in an atom

18.

What is the charge of a proton?

a)

Negative

b)

Positive

c)

Neutral

d)

Variable

19.

How can you determine the number of neutrons in an atom if you know its atomic number and mass number?

a)

Subtract the atomic number from the mass number

b)

Add the atomic number to the mass number

c)

Multiply the atomic number by the mass number

d)

Divide the mass number by the atomic number

20.

Which of the following is true about isotopes?

a)

They have different atomic numbers but the same mass number

b)

They have the same atomic number but different mass numbers

c)

They have different numbers of electrons but the same number of protons

d)

They are always ions

21.

What is the significance of the atomic number in determining the chemical properties (how it will react) of an element?

a)

It determines the element's position on the periodic table

b)

It indicates the number of electrons in a neutral atom, which determines how the atom will react chemically

c)

It shows the total mass of the atom

d)

It is only important for isotopes

22.

What is the role of electrons in chemical reactions?

a)

They have no role in chemical reactions

b)

They stabilize the nucleus

c)

They are exchanged or shared to form chemical bonds

d)

They determine the mass of the atom

23.

Label the following subatomic particles.

a)

Proton

b)

Neutron

c)

Electron

d)

Positron

1
2
3
1)
2)
3)
24.

What is the significance of the mass number of an element?

a)

It represents the total number of electrons in the atom

b)

It represents the total number of protons and neutrons in the nucleus

c)

It represents the total number of neutrons in the nucleus

d)

It represents the total number of protons in the nucleus

25.

A vertical column is called...

a)

group

b)

tower

c)

period

d)

crew

26.

A horizontal row is called...

a)

group

b)

tower

c)

period

d)

crew

27.

The identity of an element on the periodic table is determined by the number of _______.

a)

protons

b)

neutrons

c)

electrons

d)

ions

28.

The columns in the periodic table are called

a)

a metal

b)

a nonmetal

c)

a group/family

d)

a period

29.

The chemical properties of an element are determined by the number of

a)

energy levels

b)

valance electrons

c)

isotopes

d)

ions

30.

Hydrogen and Helium have similar physical and chemical properties.

a)

True

b)

False

31.

There are 7 periods on the periodic table.

a)

True

b)

False

32.

Which element has properties similar to Calcium (Ca)?

a)

Sodium

b)

Magnesium

c)

Potassium

33.

How many neutrons can be found in an atom of Na (Sodium)?

a)

12

b)

11

c)

22.99

d)

23

34.

How many protons does Potassium (K) have?

a)

39

b)

19

c)

20

d)

39.10

35.

What is the atomic mass of Calcium (Ca)?

a)

40.08

b)

20

36.

Ions are elements with the same number of protons and a different number of neutrons.

a)

True

b)

False

37.

The atomic number of an element increases from left to right across the periodic table.

a)

True

b)

False

38.

When an atom gives away an electron it becomes

a)

an isotope

b)

a negative ion.

c)

a positive ion.

d)

sad.

39.

What subatomic particle is positive and found in the nucleus?

a)

electron

b)

proton

c)

neutron

d)

quark

40.

Every element has an unique number of _______________.

a)

protons

b)

neutrons

c)

electrons

d)

symbols

41.

Atoms with the same number of protons but different numbers of neutrons are_______________.

a)

isotopes

b)

ions

c)

molecules

d)

awesome atom

42.

What are the red elements (those on the left)?

a)

metals

b)

nonmetals

c)

metalloids

43.

What are the blue elements (those on the right)?

a)

metals

b)

nonmetals

c)

metalloids

44.

What are the yellow "stair-step" elements?

a)

metals

b)

nonmetals

c)

metalloids

45.

What subatomic particle is found in the nucleus and is neutral?

a)

proton

b)

neutron

c)

electron

46.

What subatomic particle is negative and found outside the nucleus?

a)

proton

b)

neutron

c)

electron

47.

The Modern Periodic Table of Elements is arranged by

a)

atomic mass

b)

atomic number

c)

valence electrons

d)

number of isotopes

48.

Which group of the periodic table is composed of inert (not reactive)  gases?

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

49.

Which is an alkali metal?

a)

Magnesium

b)

Iron

c)

Sodium

d)

Europium

50.

Which is a halogen?

a)

Helium

b)

Chlorine

c)

Oxygen

d)

Neptune

51.

Elements in a ..................have similar chemical properties.  

a)

period

b)

group

c)

row

52.

The letter, C, is a ... of carbon.

a)

Name

b)

Nickname

c)

Chemical Symbol

d)

Pseudonym

53.

Which of the following are physical properties of metal?

a)

Luster

b)

Conductivity

c)

Malleability

d)

Ductility

54.

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

a)

True

b)

False

55.

Name this group: These metals are the most reactive.

a)

b)

c)

d)

56.

Name this group: These metals are the second most reactive.

a)

b)

c)

d)

57.

Name this group: These metals contain familiar metals such as gold, iron, and copper.

a)

b)

c)

d)

58.

Find these groups: Locate Lanthanides and Actinides.

a)

b)

c)

d)

59.

Which of the following could be properties of nonmetals?

a)

Poor electrical conductivity

b)

Poor thermal conductivity

c)

Dullness

d)

Brittleness

60.

I am a metal


I am in group 2


I am in period 6


I am…

a)

Mo

b)

Re

c)

S

d)

Ba

61.

I am a nonmetal


I am in period 2


I am in group 16/6A

a)

Ba

b)

Si

c)

Ba

d)

O

62.

Find an element with similar chemical properties to Barium (Ba).

a)

Ca an Ra, because they are in the same group and have similar chemical properties.

b)

Cs and La, b/c they are in the same period number.

c)

Ca and Y, b/c they are 90 degree angle and have similiar properties.

63.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
64.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
65.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
66.
How many electrons does a Copper atom have?
a)
63
b)
29
c)
92
d)
34
67.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
68.

All elements in this group have two valence electrons.

a)

b)

c)

d)

69.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
70.
The electrons of an atom are found...
a)
in the outer "cloud" surrounding the atom.
b)
in the nucleus of the atom.
c)
in the cloud and in the nucleus.
71.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus 
72.
What is the atomic mass equal to?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
73.
In the modern periodic table elements are arranged by:
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
74.

What noble gas does not have 8 valence electrons?

a)

H

b)

He

c)

Ne

d)

Og

75.
How many neutrons would Fe-56 have?
a)
56
b)
26
c)
30
d)
33
76.
How many protons does P-30 have?
a)
30
b)
16
c)
12
d)
15
77.
What element has 42 protons?
a)
Ca
b)
Mo
c)
Zr
d)
Po
78.
If an atom of nickel has a charge of +3, how many electrons does the atom have?
a)
28
b)
25
c)
26
d)
31
79.
If an atom of oxygen has a charge of -2, how many electrons does the atom have?
a)
18
b)
6
c)
8
d)
10
80.
How many neutrons would V-49 have?
a)
26
b)
49
c)
23
d)
50.94
81.
Which of the following could have 14 neutrons?
a)
Al-27
b)
Si-29
c)
Mg-25
d)
Na-22

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