atoms_and_ions-final

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					Name: Dializa Olivo
Chemistry Worksheet

1. Atomic number equals the number of_____________ or ____________
   Atomic mass equals the number of _____________ + _____________

Using the periodic table, fill in the chart for each Atom (Round the atomic mass to the
nearest whole number).

2. Carbon (C)
Atomic # = ______Atomic Mass = _________
# of Protons = ________# of Neutrons = ________# of Electrons = ________
# of Electrons in the valence shell? _____

3. Oxygen (O)
Atomic # = ______Atomic Mass = _________
# of Protons = ________# of Neutrons = ________# of Electrons = ________
# of Electrons in the valence shell? _____

4. Sodium (Na)
Atomic # = ______Atomic Mass = _________
# of Protons = ________# of Neutrons = ________# of Electrons = ________
# of Electrons in the valence shell? _____

5. Chlorine (Cl)
Atomic # = ______Atomic Mass = _________
# of Protons = ________# of Neutrons = ________# of Electrons = ________
# of Electrons in the valence shell? _____

6. Hydrogen (H)
Atomic # = ______Atomic Mass = _________
# of Protons = ________# of Neutrons = ________# of Electrons = ________
# of Electrons in the valence shell? _____

7. Nitrogen (N)
Atomic # = ______Atomic Mass = _________
# of Protons = ______# of Neutrons = ______# of Electrons = ______
# of Electrons in the valence shell? _____


8. Identify the following as synthesis, decomposition or exchange reaction
            a. 2HG + O2 = 2HgO ____________________

           b. Fe2+ + CuSO4 = FeSO4 + Cu2+____________________

           c. HNO3= H++ NO3- _______________________
9. Explain the basis of Ionic bonding. Give an example.



10. Explain the basis of Covalent bonding.   Give an Example

				
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