quiz 4 Flashcards by Jeimy Arias

How do you know if a compound is ionic?

There will be one metal and one nonmetal

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Example: Write the formula for ionic compounds that form aluminum and oxygen

Al2 O3

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Example: Write the formula for ionic compounds that form barium and chloride

Ba Cl2

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What is the sum for ionic compounds?

Zero

There must be a charge balance.

total positive charge = total negative charge

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Example: Write the formula for ionic compounds that form magnesium and oxygen

MgO

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Select the correct formula for this ionic compound: Na+ and O2-

a. NaO
b. Na2 O
c. Na O2

b. Na2 O

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Select the correct formula for this ionic compound: Al3+ and Cl-

a. Al Cl3
b. AlCl
c. Al3 Cl

a. Al Cl3

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Select the correct formula for this ionic compound:
Mg2+ and N3-

a. MgN
b. Mg2 N3
c. Mg3 N2

c. Mg3 N2

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Write the formula for the combination of atoms:

Lithium and Oxygen

Li2 O

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Write the formula for the combination of atoms:

Calcium and Sulfur

CaS

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Write the formula for the combination of atoms:

Lithium and Bromine

LiBr

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Beryllium and Flourine

Be F2

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What does invariant mean?

Not changing, one charge ion (same charge)

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Which transition metals are the exception and have ONLY a +1 charge?

Zn2+
Cd2+
Ag+

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Cu+ would be written as…?

Copper (I)

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Fe2+ would be written as…?

Iron (II)

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Cr3+ would be written as…?

Chromium (III)

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Write 4 as a roman numeral

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Write 5 as a roman numeral

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Write 6 as a roman numeral

Write 9 as a roman numeral

Write 10 as a roman numeral

FeCl3 with the roman numeral would be written as..

Iron(III) Chloride

Name of cation (charge of cation in roman numerals) base name of anion + ide

This is how you write a binary ionic compound

FeCl2 with the roman numeral would be written as...

Iron(II) Chloride

True or false... Are transition metals always positive?

True

How would you write MnO2?

Manganese(IV) Oxide

How would you write CoF2?

Cobalt(II) Flouride

How would you write Sn O2?

Tin(IV) Oxide

Write the formula for tin(II) chloride

Sn Cl2

What's a binary compound?

Contains ONLY two different elements

What is a polyatomic ion?

Ions that contain MORE than one element

What are the charges of polyatomic ions?

They usually have a ____ charge: -1 -2 -3 ALL are usually negative BESIDES ammonium (NH4+)

What is the formula for nitrate?

NO3-

What is the formula for chlorate?

CIO3-

What is the formula for carbonate?

CO3 2-

What is the formula for sulfate?

SO4 2-

What is the formula for phosphate?

PO4 3-

Nitrogen as a polyatomic ion turns into?

Nitrate

Chlorine as a polyatomic ion turns into?

Chlorate

Carbon as a polyatomic ion turns into?

Carbonate

Sulfur as a polyatomic ion turns into?

Sulfate

Phosphorus as a polyatomic ion turns into?

Phosphate

Sulfate (SO4 2-) if it has one less oxygen it will turn into?

Sulfite -> SO3 2-

Phosphate (PO4 3-) if it has one less oxygen it will turn into?

Phosphite -> PO3 3-

Nitrate (NO3-) if it has one less oxygen it will turn into?

Nitrite -> NO2-

Sodium Sulfate

Na (SO4)

Iron (III) Phosphate

Fe (PO4)