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Worksheets25/26 Bohr & Lewis Dot Models Notes Practice
Total questions: 31
Worksheet time: 23mins
Rate your understanding of Bohr & Lewis Dot Models as a whole
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2** I get some things but not others
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Elemental Symbol
In the middle
Atomic Number
Top corner
Mass number
Bottom of tile
Under Symbol
Name of element
What is a Bohr Model?
A model of an atom that uses only valence electrons an atom contains
A model of an atom that uses all electrons an element contains
A model of an atom that uses some of the electrons an element contains
Only shows the element symbol and it's outer most electron shell
The first energy level of a Bohr model can hold a max of (a) e- . The second and third levels can both only hold a max of (b) e- . The fourth level can hold (c) e- and the fifth level can only hold (d) electrons
What is a Lewis Dot Structure?
A model of an atom that shows Only the element symbol and some of the electrons
A model of an atom that shows Only the element symbol and all of the electrons an atom contains
A model of an atom that shows Only the element symbol and it's outer most electrons
A model of an atom that shows protons, neutrons and it's outer most electrons
Valence electrons are in the (a) shell of a model or atom.
The group number is equal to the number of (a) and the period # is equal to the number of (b) . These look like (c) around the nucleus.
Match the following
Group Number
Number of Valence electrons
Period Number
Number of energy levels
Atomic Number
Number of electrons
P++ n0
Atomic Mass
m - P+
Number of n0
The elements F, Cl, and I are all in the same group/column on the periodic table. Which is the best explanation for this arrangement?
They have the same number of energy levels
They are the same type of element
Have the Same number of protons
they have the same number of valence electrons
Both calcium and potassium have the same number of energy levels. How else could this be stated?
Both elements are in the same group in the periodic table
Both elements are in the same period on the periodic table
Both elements have the same atomic number
Both elements have the same atomic mass
Rate your understanding of Bohr & Lewis Dot Models as a whole
1* I am super lost
2** I get some things but not others
3*** I feel pretty good; I just need more practice
4**** I feel super Confident
Put the steps to drawing a lewis dot structure in order
1
draw a box
2
Write the symbol in the box
3
Put the first electron at the top of the box
4
Add electrons moving clockwise around the the box
5
Only double up electrons once each side of the box is full,
This is a correct dot diagram for nitrogen (N)
Yes, they should be positioned with one at the top and one to the right, but it does have the incorrect number of electron dots
No, they should be positioned with two at the top and one on all other sides, but it does have the correct number of electron dots
Ignoring the placement of the dots; which element would be in group 2?
Type the letter
(a)
Ignoring the placement of the dots;Which element would be in group 16?
Type the letter
(a)
This could be the dot diagram of
Mg
Cl
C
O
How many dots would a Lewis Dot structure of Helium have?
(a)
Is this a correct dot diagram for magnesium (Mg)
No , they should be positioned with one at the top and one to the right, but it does have the correct number of electron dots
No, because it has the wrong number of electrons, but they are in the correct position.
Yes because it has the correct number of electron dots and they are in the correct position.
Yes, because it has the incorrect number of electron dots and they are in the wrong position.
How many valence electrons?
(a)
Which element is this?
Calcium
Chlorine
Silicon
Potassium
What period is this atom in?
(a)
What element is this?
You can type the name or the symbol
(a)
Which Bohr model represents Be?
Which atoms would be in the same period?
Click on all of the valance electrons
Match the number of valence electrons with the correct element,
Selenium (a)
Silicon (b)
Krypton (c)
Strontium (d)
Which of the following is the Bohr Model for Fluorine, element #9?
Use the diagram to answer the question.
A
B
C
D
Rate your understanding of Bohr & Lewis Dot Models as a whole.
1* I am super lost
2** I get some things but not others
3*** I feel pretty good; I just need more practice
4**** I feel super Confident
