Chem ch 5

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One compound discovered on Io was the blue disulfur trioxide. Write the chemical formula for this compound.

S2O3

Write the chemical formula for disilicon hexabromide.

Si2Br6

Enter a formula for the compound that forms from strontium and chlorine.

SrCl2

Which of the following is a polyatomic ion?

NO3-

Give CaBr2 ionic compound an appropriate name.

calcium bromide

Name the acid: H2CO3(aq).

carbonic acid

Name the acid: H3PO4(aq).

phosphoric acid

Some metals can form ions of different charges in different compounds. Deduce the charge of the Cr ion in the compound Cr(NO3)3.

3+

Complete the following table. Al2(SO4)3 Formula Number of SO42−SO42− units, Number of sulfur atoms, Number of oxygen atoms, Number of metal atoms

3,3,12,2

How many oxygen atoms are in the chemical formula Ba(NO3)?

6

barium and oxygen

BaO

lead(II) chromate

PbCrO4

What are the basic units that compose each of the following substances? Single atoms, Molecules, Formula units

single atoms- none molecules-N2F4, N2 formula units- Rb2O, Fe(NO3)2

Give NaI ionic compound an appropriate name.

sodium iodide

How many hydrogen atoms are in each of the following chemical formulas? HNO3 Ca(HPO4)2 KHCO3 NaC2H3O2

1 2 1 3

Complete the following table. CaSO4 Formula Number of SO42−SO42− units, Number of sulfur atoms, Number of oxygen atoms, Number of metal atoms

1,1,4,1

Complete the following table. K2SO4 Formula Number of SO42−SO42− units,Number of sulfur atoms, Number of oxygen atoms, Number of metal atoms

1,1,4,2

silver nitrate

AgNO3

aluminum and selenium

Al2Se3

calcium fluoride

CaF2

Cobalt(II) bromide

CoBr2

Which compound is ionic?

Cu(NO3)2

copper(II) chlorate

CuClO3

iron(II) phosphate

Fe3(PO4)2

Which element is a molecular element?

Iodine

Determine whether the following pairs of elements can form ionic compounds.

Ionic-manganese and chlorine oxygen and calcium fluorine and sodium sodium and oxygen Non Ionic-lithium and calcium nitrogen and iodine

potassium permanganate

KMnO4

Lithium and Sulfur

Li2S

Lithium hydrogen sulfite

LiHSO3

What is the formula for an ionic compound that contains the elements magnesium and chlorine?

MgCl2

magnesium and fluorine

MgF2

Match the substances with the basic units that compose them. Molecules Formula units Diatomic molecules Single atoms

Molecules- CCl4 Formal units- Na2SO4 Diatomic molecules- Bromine Single atoms- Helium

Write a chemical formula for a compound that contains two oxygen atoms to every one nitrogen atom.

NO2

sodium sulfite (preservative)

Na2SO3

sodium hydrogen sulfite

NaHSO3

sodium hydrogen sulfate

NaHSO4

sodium hydroxide

NaOH

Provide the name of the oxyanion of the acid: HC2H3O2(aq)

acetate

Name the acid: HC2H3O2(aq)

acetic acid

What is the name of the molecular compound CBr4CBr4?

carbon tetrabromide

Provide the name of the oxyanion of the acid: H2CO3(aq)

carbonate

Give Cr2O3 ionic compound an appropriate name.

chromium (III) oxide

What is the name of the molecular compound P2O5?

diphosphorus pentoxide

Name the acid: HCl(aq)

hydrochloric acid

Provide the name of the oxyanion of the acid: H3PO4(aq)

phosphate

Give SnO ionic compound an appropriate name.

tin (II) oxide

What is the name of the molecular compound XeF6?

xenon hexafluoride


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