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Molecular Compounds Answer Key

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Naming Compounds
#1

Write the chemical name for   CO2

Carbon Dioxide

#2

Give the chemical formula for Phosphorous Bromide

PBr3

#3

Name this molecular compound with their common name H2O2

hydrogen peroxide

#4

Name this ion NH4+

Ammonium

#5

Name Fe2S3

Iron (III) Sulfide

True or False
#1

Molecular compounds are made up of metals

False

They are made up of nonmetals
#2

An ionic compound is made up of a metal (cation) and a (metal) anion

An ionic compound is made up of a metal (cation) and a (nonmetal) anion

#3

Carbon Dioxide is a molecular compound

True 

Carbon & Oxygen are both nonmetals

#4

Molecular compounds can include metals in rare situations

False

#5

This is the chemical formula for the polyatomic ion acetate C2H6O3

False

Acetate is C2H3O2-

Cation/ Anion
#1

In a ionic compound the _________ is written first.

The cation is written first.

The element with the positive charge.

The metal is written first.

#2

I am the anion Na2SO4

What is "Sulfate"?

SO4-2

#3

_______________is the only cation polyatomic ion.

What is "Ammonium"

NH4+

#4

In the ionic compound Zinc (II) Chloride the anion has a ______ charge.

What is -1?

Chloride = Cl-1

#5

In the ionic compound Pb(NO3)2 there are __2___atoms of ____ & ____atoms of ____ in the anion.

What is (N,3, & O)?

In the polyatomic compound  Pb(NO3)2 there are __2___atoms of N___ & __6__atoms of __O__ in the anion.


Polyatomics
#1

Write the name for this polyatomic ion SO42-

What is sulfate?

#2

The overall charge (Net Charge) on the ionic compound Ba(NO3)2 is_____.

What is Zero?

Electrically Neutral

#3

The correct name for PO43- is_____________.

 

DAILY DOUBLE

What is Phosphate

#4

Polyatomics are written __________because they are made up of 2 or more______________ atoms, thus they are the __________.

What is second, nonmetal, & anion?

#5

All of these are polyatomic ions except for

NO3-                      C2O42-

ClO3-                        KO2-

What is KO2-?

This is not a polyatomic ion. Polyatomic ions are made up of 2 or more nonmetals and K is a metal.

All of Unit 4B
#1

The charge on the silver ion is __________.

What is +1?

Though silver is a transitional metal, it can only have a charge of +1.

#2

The elements that are next to the staircase on the periodic table are called__________.

What are metalloids?

#3

Nonmetals tend to form the _______ ion.

What is negative ion?

Anion

#4

Metals tend to _______ electrons while nonmetals ________ electrons.

What is lose & gain?

#5

An orange-red flame is produced when SrCl2 and SrSO4 are put into the flame. _________ is the element that causes this color.

What is Sr (Stronium)?

Metals give off color during a flame test not nonmetals.

Stronium is the metal present in both of these chemical formulas, thus the color produced is due to the Stronium atom.

Final Question

In the flame test lab we know that K )potassium) gives off a _________ color while Cu (copper) gives off a __________ color.

K (potassium) color is pink/purple (lilac)

Cu (copper) color is blue/green