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Name ____________________________________________________ Hour _______
1. If an element has an oxidation number of +2, it means this element will
combine with another element by giving ______________ or taking
______________ electrons.
2. List all of the polyatomic ion (in symbols):
3. A ________________ bond is a transfer of electrons.
4. A ________________ bond is a sharing of electrons.
5. A chemical formula is a shorthand method for representing a ________________________.
6. Define a polyatomic ion: ____________________________________________
_____________________________________________________________________
7. Look at the following formula:
Ag2O3
The numbers 2 and 3 are called _____________.
What do they tell us? ___________________________________________________________.
8. Summarize the steps in writing chemical formulas.
9. Summarize the steps in naming chemical compounds.
10. List the 2 elements that have variable oxidation numbers.
11. What is the difference between Nitrogen and Nitrate?
++++ PRACTICE THE FOLLOWING WRITING AND NAMING COMPOUNDS++++
Write the formulas for the following:
1. potassium bromide
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2. barium sulfide
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3. silver sulfide
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4. copper (I) phosphide
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5. ammonium sulfate
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Name the following compounds:
1. CrI3
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2. Ca(OH)2
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3. (NH4)2(CO3)
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4. Cu2O
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5. Fe2(SO4)3
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