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WorksheetsAtoms and Elements
Total questions: 21
Worksheet time: 15mins
Name
Class
Date
1.
From the diagram, which particles are indicated with the arrow?
a)
electrons and protons
b)
protons and neutrons
c)
electrons and neutrons
d)
photons and nucleons
2.
These particles orbit around the nucleus of an atom. What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
3.
All matter is made of
a)
energy
b)
atoms
c)
air
d)
chemistry
4.
The positive particles of an atom are
a)
electrons
b)
atoms
c)
neutrons
d)
protons
5.
Neutrons are
a)
negative
b)
positive
c)
neutral
d)
cows
6.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
7.
Atoms have no electric charge because they...
a)
have an equal number of charged and non charged particles
b)
have neutrons in their nuclei
c)
have an equal number of electrons and protons
d)
have an equal number of neutrons and protons
8.
How many electrons are in the element, Oxygen, with the atomic number of 8?
a)
7
b)
10
c)
8
d)
9
9.
True or False? Isotopes are atoms of the same element that differ in mass number and number of neutrons
a)
True
b)
False
10.
How many the electrons does "Al," aluminum, have?
a)
5
b)
10
c)
13
d)
3
11.
What is the
atomic number
and mass number
of this atom?
atomic number
and mass number
of this atom?
a)
atomic number 7 mass number is 14
b)
atomic number 14 mass number 7
c)
none of the above
12.
The number in the upper corner of an element tile (7 for nitrogen) is called _____
a)
the proton number
b)
the atomic number
c)
the electron number
d)
the mass number
13.
In the Bohr model of the atom, electrons can only be in certain _____
a)
shells
b)
nuclei
c)
frames
d)
circles
14.
In the Bohr model of the atom, what is the maximum number of electrons in the first shell?
a)
1
b)
2
c)
6
d)
8
15.
In the Bohr model of the atom, what is the maximum number of electrons in the second shell?
a)
2
b)
6
c)
8
d)
18
16.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
17.
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
18.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
19.
Elements in the same ________ are more chemically similar.
a)
group
b)
period
c)
club
d)
table
20.
Rows on the period table are called _____ while columns are called _____.
a)
groups, families
b)
groups, periods
c)
periods, groups
d)
families, groups
21.
An element is made up of only one kind of _____.
a)
isotope
b)
plastic
c)
atom
d)
metal
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