Chemistry 151: Chapter 3 Mastering Practice Quesions
Group 7A charge (using the octet rule)
-1 charge
gold(I) has a charge of:
1+
Express your answer as a numerical value with a sign for the charge: lithium
1+ in group 1A
Gold (I) Chloride an antimicrobial
1,1
calcium and carbonate, the mineral limestone
1,1
calcium ion and sulfate ion
1,1
chloride has a charge of:
1-
Express your answer as a numerical value with a sign for the charge: chlorine
1- in group 7A
what is the molar mass of carbohydrate glucose C6H12O6
180.16 g/mol
Calcium is group 2A which means that the cation has a:
2+ charge
calcium cation has a:
2+ charge
Express your answer as a numerical value with a sign for the charge: strontium
2+ in group 2A
polyatomic anion carbonate (CO3)2- has a:
2- charge
Express your answer as a numerical value with a sign for the charge: sulfur
2- in group 6A
The chemical formula when Al combines with CO32-:
Al2(CO3)3
Gold (I) Chloride will result in a chemical formula of:
AuCl
calcium sulfate chemical formula:
CaSO4
H20
Chemical formula for water
When comparing C and Cl, which one is more electronegative?
Chloride
nonpolar
Cl2 F2 Br2 O2 H2 He Ne Ar Xe CH4 C2H6 CH2
what is the ionic compound formed with copper (I) ion and sulfide?
Cu2S
what is the chemical formula for potassium and chloride?
KCl
What is the formula for an ionic compound that contains the elements magnesium and chlorine?
MgCl2
Alluminum Chloride
NH4Cl
what is the formula for the ionic compound ammonium nitrate?
NH4NO3
what is the chemical formula for nitrogen triiodide?
NI3
what is the chemical formula for nitrogen dioxide?
NO2
Sodium Bicarbonate
NaHCO3
Sodium Nitrite
NaNO2
When comparing I and N, which one is more electronegative?
Nitrogen
When comparing P to N, which one is more electronegative?
Nitrogen
When comparing Se and Te, which one is more electronegative?
Selenium
what is the chemical formula for silicon tetrachloride?
SiCl4
what is the name for CO2?
carbon dioxide
what is the name for CO?
carbon monoxide
what is the name of ionic compound formed from copper(I) ion and sulfur?
copper(I) sulfide
what is the name for N2O?
dinitrogen monoxide
potassium and calcium
do not form ionic bonds
sulfur and bromine
do not form ionic bonds
fluorine and sodium
form ionic bonds
iron and chlorine
form ionic bonds
oxygen and magnesium
form ionic bonds
sodium and oxygen
form ionic bonds
nonmetals in groups 5A, 6A, 7A tend to:
gain electrons and form anions
To achieve an ionic compound with a net zero charge:
gold(I) ions form an ionic bond with 1 chloride ion
electronegative tend to:
increase as you move up and to the right of the periodic table and down the periodic table
When metal and nonmetal exchange electrons to make a cation and anion, respectively, they can form:
ionic compound
The formula of an ionic compound indicates the:
kinds and number of ions
The metal lithium is in group 1A and tends to:
lose an electron to form a cation. The cation will have a charge of 1+ because it will have one more proton than the number of electrons.
C
n1=2 n2=4
what is the name for NO2?
nitrogen dioxide
what is the name for NO?
nitrogen monoxide
what group on the periodic table is not considered electronegative?
noble gases
Is CCl4 polar or nonpolar?
nonpolar
Is Cl2 polar or nonpolar?
nonpolar
is CO2 polar or nonpolar?
nonpolar
what is the name for PBr3?
phosphorus tribromide
what is the name for the compound PCl3?
phosphorus trichloride
Is HF polar or nonpolar?
polar
Is SCl2 polar or nonpolar?
polar
is CH3Br polar or nonpolar?
polar
The name of the compound when K combines with CO32-:
potassium carbonate
Cl-
protons = 17, electrons = 18 (add 1 from 17) anion formed
Ca2+
protons = 20, electrons = 18 (subtract 2 from 20) cation formed
Cu+
protons = 29, electrons = 28 (subtract 1 from 29) cation formed
Te2-
protons = 52, electrons = 54 (add 2 from 52) anion formed
what is the name of the ionic compound BaCO3?
barium carbonate
what is the molar mass of KClO2?
106.55 g/mol
what is the molar mass of magnesium sulfate MgSO4:
120.38 g/mol
how many valence electrons does carbon have?
4 valence electrons
what is the molar mass CH3CO2H?
60.5 g/mol
what is the molar mass of sulfur dioxide SO2?
64.07 g/mol
how many valence electrons does chlorine have?
7 valence electrons
what is the molar mass of NH4NO3?
80.05 g/mol
What is the most electronegative element on the periodic table?
Fluorine
What is the least electronegative element?
Francium
The chemical formula when K combines CO32-:
K2CO3
Potassium Phosphate
K3PO4
The chemical formula when Se(II) combines with CO32-:
SnCO3
why are noble gases not considered electronegative?
They have a complete valence shell and are not very reactive.
what is the chemical formula for zinc and oxide?
ZnO
electronegative
a measure of how strongly atoms attract bonding electrons
The name of the compound when Se(II) combines with CO32-:
tin (II) carbonate
The number of anions and cations create a compound with an overall charge of:
zero
