Term
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Definition
| Polyatomic ions - Ions which are formed when a group of atoms gains or loses electrons |
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Term
| Memorize the polyatomic ions |
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Definition
Make flashcards for the polyatomic ions
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Term
How many oxygen atoms are in aluminum acetate
Al(C2H3O2)3
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Definition
The Al(C2H3O2)3 has 2 oxygen but in it is in a set of parentheses with a subscript of 3.
This means there are 2 x3 = 6 oxygen
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Term
Explain why polyatomic ions are often said to be a cross between covalent compounds and ionic compounds.
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Definition
Since polyatomic ions have a groups of atoms that share electrons, they are like covalent compounds. However, since they also contain extra electrons or a deficit of electrons, they are also like ionic compounds. |
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Term
Give the chemical formulas for the following molecules:
A. Sodium Sulfate
B. Magnesium Nitrate
C. Cacium Carbonate
D. Aluminum chromate |
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Definition
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Term
| When aluminum nitrite reacts with sodium carbonate, aluminum carbonate and sodium nitrite are produced. Write a balanced chemical equation for this reaction. |
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Definition
2Al(NO2)3 + 3Na2CO3 ---> Al2(CO3)3 + 6NaNO2
If you do not understand this problem, please look at the solution in your "On Your Owns" |
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Term
In VSEPR theory, which repels other electron groups more strongly, a bond or a non-bonding electron pair? |
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Definition
Non-bonding electron pairs repel more strongly than bonds. |
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Term
For the test, be able to
explain, in your own words, why molecules sometimes attain three-dimensional shapes rather than just being flat. |
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Definition
Molecules do anything they can to get their central atom's valence electron groups far away from each other. They can often get them farther apart if they use all three dimensions of space. |
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Term
Determine the shape of a CS molecule.
Give its bond angle and draw a picture of it
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Definition
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Term
| Determine the shape of a SiI4 molecule. Give its bond angle and draw a picture of it |
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Definition
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Term
| Determine the shape of a NF3 molecule. Give its bond angle and draw a picture of it. |
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Definition
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Term
| Determne the shape of a CCl2S molecule. Give its bond angle and draw a picture of it. |
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Definition
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Term
Determine the shape of a SF2 molecule.
Give its bond angle and draw a picture of it. |
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Definition
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Term
Classify each of the following molecules as ionic, polar covalent, or purely covalent:
A. SiFCl2
B. SiS2
C. AlF3
D. N2
E. CCl4
F.PF3 |
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Definition
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Term
| Which of the substances from card#14 would you expect to dissove in water. |
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Definition
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