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WorksheetsAtoms, Bonding & the Periodic Table
Total questions: 20
Worksheet time: 26mins
Name
Class
Date
1.
An atom's valence electrons are those electrons that have the highest energy
a)
true
b)
false
2.
Atoms tend to be stable and nonreactive if they have six valence electrons.
a)
true
b)
false
3.
In the periodic table, the number of valence electrons in each element decreases from left to right across each period.
a)
True
b)
False
4.
The reactivity of a metal depends on how easily it loses its valence electrons.
a)
True
b)
False
5.
Within each period in the periodic table, elements have similar properties because they have the same number of valence electrons.
a)
true
b)
false
6.
The number of ____________ in the atom of an element determines its chemical properties
a)
protons
b)
neutrons
c)
valence electrons
d)
chemical bonds
7.
The columns in the periodic table are called __________________.
a)
chemical symbols
b)
periods
c)
groups
d)
atomic numbers
8.
A(n)__________________ is a model that shows the number of valence electrons in a particular atom.
a)
valence diagram
b)
electron dot diagram
c)
Bohr model
d)
chemical symbol
9.
The attractive force that holds two atoms together is called a(n) _______________________.
a)
atomic number
b)
chemical bond
c)
valence electron
d)
electron cloud
10.
Noble gases react easily with other elements because they can easily lose their valence electrons to form chemical bonds with other atoms.
a)
True
b)
False
11.
This could be the dot diagram of
a)
Mg
b)
Cl
c)
C
d)
O
12.
This is a correct dot diagram for nitrogen (N)
a)
true
b)
false
13.
This is a correct dot diagram for neon (Ne)
a)
true
b)
false
14.
Which of these is incorrect?
a)
b)
15.
What are the elements (Be, Mg, Ca,...) in Group 2 called?
a)
Alkali metals
b)
Alkaline earth metals
c)
Halogens
d)
Noble Gases
16.
This could be the dot diagram of
a)
P
b)
Ar
c)
Na
d)
B
17.
This could be the dot diagram of
a)
Ne
b)
Si
c)
Al
d)
Be
18.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
19.
Manganese is atomic number 25 in the periodic table. It has an atomic mass of 54.938 amu. How many protons does it have?
(a)
20.
Manganese is atomic number 25 in the periodic table. It has an atomic mass of 54.938 amu. How many neutrons does it have?
(a)
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