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WorksheetsThe Atom and the Periodic Table
Total questions: 35
Worksheet time: 35mins
Name
Class
Date
1.
He proposed the particle theory of matter and called nature’s most basic particle the “atomos”
a)
Aristotle
b)
Democritus
c)
Chadwick
d)
Millikan
2.
He unknowingly discovered the electron as a result of cathode ray tube experiments.
a)
Thomson
b)
Chadwick
c)
Democritus
d)
Aristotle
3.
The smallest particle of an element that still retains all the properties of that element.
a)
atom
b)
cathode ray tube
c)
an electron
d)
a compound
4.
He discovered the neutron and paved the way for the discovery of nuclear fission and the atomic bomb.
a)
Chadwick
b)
Thomson
c)
Democritus
d)
Goldstein
5.
He believed that all matter was continuous and that four basic elements existed (earth, wind, fire, water).
a)
Democritus
b)
Aristotle
c)
Chadwick
d)
Thomson
6.
The picture above represents Rutherford’s __________ experiment.
a)
gold foil
b)
cathode ray tube
c)
oil drop
d)
physical and chemical changes
7.
In Rutherford’s experiment, when the alpha particles struck the piece of gold foil some of the particles passed through the foil while others bounced off and went in other directions. The particles that bounced off hit the _____ of the gold atoms
a)
nucleus
b)
electrons
c)
outer core
d)
orbital
8.
Rutherford’s experiment determined that the nucleus of an atom is tiny, dense and ______ charged.
a)
positively
b)
negatively
c)
neutrally
9.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
10.
Who stated that all atoms of the same element are excacty alike?
a)
Democritus
b)
Dalton
c)
Thomson
d)
Borh
11.
What is the standard unit of mass at the atomic level?
a)
centimeters
b)
millimeters
c)
amu
d)
milligrams
12.
What are the two main parts of the atom?
a)
nucleus and cytoplasm
b)
nucleus and electron cloud
c)
core and electron cloud
d)
protons and neutrons
13.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
14.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
15.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
16.
The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.
a)
mass number
b)
atomic number
c)
atomic weuight
d)
isotope weight
17.
The _________ of an element equals the number of protons in an atom of that element
a)
mass number
b)
atomic weight
c)
atomic number
d)
isotopes
18.
The only subatomic particle that carries a positive charge is the _____.
a)
electron
b)
nucleus
c)
neutron
d)
proton
19.
An atom has 10 protons and a mass number of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
20.
What family or group is the following picture illustrating?
a)
alkali metals
b)
transition metals
c)
halogens
21.
What group or family is the following picture illustrating?
a)
alkaline earth metals
b)
halogens
c)
noble gases
22.
What group or family is the following picture illustrating?
a)
alkaline earth metals
b)
halogens
c)
noble gases
23.
What group or family is the following picture illustrating?
a)
alkaline earth metals
b)
halogens
c)
noble gases
24.
What does Fe represent on the element Iron?
a)
Atomic Number
b)
Atomic Mass
c)
Element Name
d)
Element's Chemical Symbol
25.
What does 26 represent on the element Iron?
a)
Atomic Number
b)
Atomic Mass
c)
Element Name
d)
Element's Chemical Symbol
26.
What does the word Iron represent on the element Iron?
a)
Atomic Number
b)
Atomic Mass
c)
Element Name
d)
Element's Chemical Symbol
27.
What does 55.847 represent on the element Iron?
a)
Atomic Mass
b)
Atomic Number
c)
Element Name
d)
Element's Chemical Symbol
28.
What does the blue represent on the Periodic Table?
a)
Metals
b)
Nonmetals
c)
Metalloids
29.
What does the green represent on the Periodic Table?
a)
Nonmetals
b)
Metalloids
c)
Metals
30.
True/False Noble Gases have High Reactivity.
a)
True
b)
False
31.
The horizontal rows on the Periodic Table are called what?
a)
Periods
b)
Groups
c)
Chemical Symbols
d)
Atomic Numbers
32.
Which one is a physical property of a metal?
a)
Not conductors of electricity
b)
Not good insulators
c)
Shiny
d)
Brittle
33.
What do the families of the periodic table have in common?
a)
They react in similar ways because they have the same electron configuration
b)
The have the same number of protons
c)
They are located in the same row
d)
They have the same mom and dad
34.
How can you figure out the period number?
a)
By counting the number of electron shells
b)
By counting the number of valence electrons in the last shell
c)
By counting all the electrons
d)
By looking at the periodic table
35.
What color are the electrons in this picture?
a)
Red
b)
Blue
c)
Black
d)
Purple
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