Name: _______________________________________________ Date: ________________ Period: ______
Atoms and Molecules Worksheet
Using the Periodic Table displayed on the screen or in your text book, answer the following questions.
What is the atomic number of the following atoms?
How many protons do the following atoms have?
1) Cesium: __________
6) Nitrogen: __________
2) Carbon: __________
7) Argon: ____________
3) Iodine: ___________
8) Vanadium: _________
4) Mercury: _________
9) Potassium: _________
5) Calcium: _________
10) Magnesium: ________
How many electrons do the following atoms have?
11) Copper: _________
14) Titanium: _________
12) Lead: ___________
15) Silicon: ___________
13) Silver: ___________
Fill in the number of electrons in the correct energy levels below.
Number of Fluorine electrons: __________
Number of Neon electrons: ___________
Is Fluorine Stable? ____________
Is Neon Stable? ____________
Explain your answer: _______________________
Explain your answer: _____________________
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Covalent Bond Drawing: Water (H2O) is made of three atoms (2 hydrogen atoms and 1 oxygen atom). Fill in
the table below and then add the number of electrons to each atom in the picture.
Atom
Number of electrons
Hydrogen #1
Hydrogen #2
Oxygen
Hydrogen atom #2
Hydrogen atom #1
Oxygen atom
1) By itself, why is oxygen unstable? _______________________________________________________
2) By itself, why is hydrogen unstable? ______________________________________________________
3) How many electrons does oxygen share with hydrogen #1? __________ Hydrogen #2? _________
4) When both hydrogen atoms share with oxygen, how many electrons are in its outer energy level? Is the
oxygen atom stable? ___________________________________________________________________
Ionic Bond Drawing: Fill in the two tables based on the number of electrons before and after bonding.
Drawing Directions
a. Add the correct number of
electrons to each atom.
b. Using an arrow, show the
electrons that will be transferred.
5) Why will lithium floride (Li F) be created from these two atoms?
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