Chemistry Ionic and Molecular Compounds

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What is an ionic compound?

- A compound made up of a cation/mental and an anion/non-metal - Electrons are transferred in ionic compounds

What is a molecular compound?

- A compound made up of non-metals - Electrons are shared in molecular compounds

What is a poly atomic ion? Give an example.

- An ion made up of more than one atom Ex. SO4^-2 and OJ ^-1

How many valence electrons in Li?

1

How many valence electrons in Al?

3

How many valence electrons in N?

5

When do you use Roman numerals in the name of an ionic compound?

All transitional metals and Sn and Pb need a Roman numeral in their name to indicate charge of the cation

Write the formulas for the following chemical compounds: Diboron Tetrabromide

B2Br4

What is the formula for Ba^+2 and S^-2?

BaS

Decide whether the following compounds are Ionic or Molecular: Carbon Tetrafluoride

CF4 = Molecular

Write the formula for the following compounds: Calcium Phosphate

Ca3(Po4)2

Name the following chemical compounds: Ca(C2H3O2)2

Calcium Acetate

How do you name an ionic compound?

Cation - same name as on periodic table Anion - add -ide to the ending unless it is a poly atomic ion then just look at cheat sheet

If Cl gains 1 electron, what kind of charge does it have?

Cl^-1

Write names for the following ionic compound: CuBr2

Copper (II) Bromide

Write the formula for the following compounds: Chromium (III) Nitrite

Cr(NO2)3

Name the following molecular formula: N2O

Dinitrogen Monoxide

Name the following chemical compounds: P2O5

Diphosphorus Pentoxide

What is different about a Covalent/Molecular Bond?

Electrons are shared

What is different about an Ionic Bond?

Electrons are transferred

If Fe loses 2 electrons, what kind of charge does it have?

Fe^+2

Which group(s) of elements don't form ions?

Group 4A and 8A

Write the formula for the following compounds: Mercury (II) Bromide

HgBr2

Name the following compounds: Fe(ClO3)3

Iron (III) Chlorate

Name the following chemical compounds:FePO4

Iron (III) Phosphate

Write the formulas for the following chemical compounds: Potassium Carbonate

K2CO3

Write the formula for Potassium Sulfide?

K2S

What is the formula for Li and O?

Li2O

Decide whether the following compounds are Ionic or Molecular: Lithium Iodine

LiI = Ionic

Name the following compounds: LiCN

Lithium Cyanide

Write the formulas for the following chemical compounds: Magnesium Chloride

MgCl2

Write the formulas for the following chemical compounds: Maganese (II) Phosphate

Mn3(PO4)2

Name the formula for the following compounds: Nitrogen Triflouride

NF3

Write the formula for Sodium Iodide?

NaI

Name the following molecular formula: PCl3

Phosphorus Trichloride

What condition must be met in writing a balanced formula for an ionic compound?

Positive charge must cancel out negative charge

Write names for the following ionic compound: KCl

Potassium Chloride

Name the formula for the following compounds: Disulfur Dichloride

S2Cl2

Decide whether the following compounds are Ionic or Molecular: NaCl

Sodium Chloride = Ionic

Decide whether the following compounds are Ionic or Molecular: SO2

Sulfur Dioxide = molecular

Name the following molecular formula: SF6

Sulfur Hexafluoride

What does the subscript, +1, in Li^+1?

The charge of Li

What does the subscript of NO2 represent?

The number of atoms of O

Name the following chemical compounds: Ti(SO4)2

Titanium (IV) Sulfate

When do you NOT use mono to name a molecular compound?

When the first element only has 1 atom -Ex. Co2 = Carbon Dioxide not monocarbon dioxide

When are parentheses used in writing a chemical formula?

When there is more than one of a poly atomic ion

Write names for the following ionic compound: ZnS

Zinc (II) Sulfide


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