2 chemistry test
The correct name for kS2 is
potassium sulfide
Elements in the same group of the periodic table typically have
similar physical and chemical properties
The correct name of the compound Na3N is
sodium nitride
The correct name for SrO is
strontium oxide
Which type of formula provides the most information about a compound?
structural
Which one of the following does not occur as diatomic molecules in elemental form?
sulfur
The correct name for SO is
sulfur monoxide
Which pair of elements is most apt to form a molecular compound with each other?
sulfur, fluorine
The correct name for H2SO3 is
sulfurous acid
An empirical formula always indicates
the simplest whole-number ratio of different atoms in a compound
The name of the ionic compound V2O3 is
vanadium(III) oxide
Sodium forms an ion with a charge of
1+
Which species has 48 electrons?
118 50 Sn+2
Which species has 54 electrons?
128 52 Te-2
Which one of the following species has as many electrons as it has neutrons?
19F-
Barium forms an ion with a charge of
2+
Calcium forms an ion with a charge of
2+
Aluminum forms an ion with a charge of
3+
The species __________ contains 16 neutrons.
31P
Which species has 16 protons?
34S2-
Which species is an isotope of 39Cl
36Cl-
There are __________ protons, __________ neutrons, and __________ electrons in 131 I-
53, 78, and 54
Which group in the periodic table contains only nonmetals?
8A
Which of the following compounds would you expect to be ionic? 1
CaO
When calcium reacts with sulfur the compound formed is
CaS
The formula for zinc phosphate is Zn3(PO4)2. What is the formula for cadmium arsenate?
Cd3(AsO4)2
Elements in Group 6A are known as the
Chalcogens
Which one of the following compounds is chromium(III) oxide?
Cr2O3
The formula of the chromate ion is...
CrO4-2
Which one of the following compounds is copper (I) chloride?
CuCl
Which formula/name pair is incorrect?
Fe2(SO4)3 iron(III) sulfide
The correct formula of iron(III) bromide is
FeBr3
The formula of bromic acid is
HBrO3
Which one of the following is the formula of hydrochloric acid?
HClO2
What is the formula for perchloric acid?
HClO4
Magnesium reacts with a certain element to form a compound with the general formula MgX. What would the most likely formula be for the compound formed between potassium and element X?
K2X
The formula of a salt is XCl2 . The X-ion in this salt has 28 electrons. The metal X is
Zn
When a metal and a nonmetal react, the __________ tends to lose electrons and the __________ tends to gain electrons.
metal, nonmetal
The correct name for Ni(CN)2 is
nickel (II) cyanide
When a fluorine atom forms the fluoride ion, it has the same charge as the __________ ion.
nitrate
Which one of the following polyatomic ions has the same charge as the hydroxide ion?
nitrate
Aluminum reacts with a certain nonmetallic element to form a compound with the general formula AlX. Element X is a diatomic gas at room temperature. Element X must be
nitrogen
__________ are found uncombined, as monatomic species in nature.
noble gases
Horizontal rows of the periodic table are known as
periods
In the periodic table, the rows are called __________ and the columns are called __________.
periods, groups
The name of PCl3 is __________.
phosphorus trichloride
Which element forms an ion with the same charge as the ammonium ion?
potassium
The name of the ionic compound KBrO4 is
potassium perbromate
Potassium forms an ion with a charge of
+1
The charge on the manganese in the salt MnF3 is
+3
Fluorine forms an ion with a charge of
-1
Iodine forms an ion with a charge of
-1
Oxygen forms an ion with a charge of
-2
Sulfur forms an ion with a charge of
-2
The correct name for N2O5 is
dinitrogen pentoxide
the name of binary compound N2O4 is
dinitrogen tetroxide
The formula of ammonium carbonate is
(NH4)2CO3
What is the correct formula for ammonium sulfide?
(NH4)2S
The formula for aluminum hydroxide is
Al(OH)3
Predict the empirical formula of the ionic compound that forms from aluminum and oxygen.
Al2O3
The formula for the compound formed between aluminum ions and phosphate ions is
AlPO4
typically form ions with a 2+ charge
Alkaline earth metals
The element __________ is the most similar to strontium in chemical and physical properties.
Ba
Which one of the following molecular formulas is also an empirical formula?
C2H6SO
The empirical formula of a compound with molecules containing 12 carbon atoms, 14 hydrogen atoms, and 6 oxygen atoms is
C6H7O3
Which compounds do not have the same empirical formula?
CO, CO2
Formula of a carbonate ion
CO3 2-
The ions Ca+2 and PO4-3 form a salt with the formula
Ca3(PO4)2
Predict the empirical formula of the ionic compound that forms from magnesium and fluorine.
MgF2
Predict the empirical formula of the ionic compound that forms from magnesium and oxygen.
MgO
Magnesium and sulfur form an ionic compound with the formula __________.
MgS
The correct formula for molybdenum(IV) hypochlorite is
Mo(ClO)4
Which metal does not form cations of differing charges?
Na
Predict the empirical formula of the ionic compound that forms from sodium and fluorine.
NaF
The charge on the _________ ion is -3.
Nitride
Of the following, __________ contains the greatest number of electrons.
P-3
Of the choices below, which one is not an ionic compound?
PCl5
Which one of the following is most likely to lose electrons when forming an ion?
Rh
Element M reacts with fluorine to form an ionic compound with the formula MF3. The M-ion has 18 electrons. Element M is __________.
Sc
Which metal forms cations of differing charges?
Sn
What is the formula of the compound formed between strontium ions and nitrogen ions?
Sr3N2
Which of the following compounds would you expect to be ionic? 2
SrCl2
Elements in Group 1A are known as the
alkali metals
Elements in Group 2A are known as the
alkaline earth metals
The correct name for Al2O3 is
aluminum oxide
The name of the ionic compound NH4CN is
ammonium cyanide
The name of the ionic compound (NH4)3PO4 is
ammonium phosphate
The molecular formula of a compound is always __________ the empirical formula.
an integral multiple of
Which pair of elements is most apt to form an ionic compound with each other?
barium, bromine
The correct name for CaH2 is
calcium hydride
The correct name for CCl4 is
carbon tetrachloride
The correct name for H2CO3 is
carbonic acid
The correct name for HClO3 is
chloric acid
The correct name for HClO2 is
chlorous acid
Chromium and chlorine form an ionic compound whose formula is CrCl3. The name of this compound is
chromium(III) chloride
The suffix-ide is used
for monatomic anion names
Vertical columns of the periodic table are known as
groups
A molecular formula always indicates
how many of each atom are in a molecule
The correct name for HlO2 is
iodous acid
The correct name for Mg(ClO3)2 is
magnesium chlorate