Chem ch 5
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
