Chapter 23 Physical Science
how many spaces are available for electrons in the 3rd valance shell
8
if Al ions have a 3+ charge and S ions have a 2- charge, the compound aluminum sulfide is
Al2S3
Bases on their position on the periodic table, which of these covalent bonds is most polar P-S P-Cl Si-S C-F
C-F
the chemical formula for cobalt (III) oxide is
CO2O3
which is the correct ionic compound name for Cu3As2
Copper(II) Arsenide
Bases on their positions on the periodic table, which of these covalent bonds is most polar F-S F-F F-O F-As
F-As
If Ga ions have a 3+ charge and S ions have a 2- charge, the compound gallium sulfide is
Ga2S3
find the correct formula for potassium sulfide
K2S
If Mg ions have a 2+ charge and O ions have a 2-charge the compound magnesium oxide would be
MgO
WHat is the chemical formula for dinitrogen tetrafluoride
N2F4
which of the following is the chemical formal for Nitrogen Monoxide
NO
If Pb has a +4 charge and (OH) has a negative charge, the compound lead (IV) hydroxide is
Pb(OH)4
based upon the elcetronegativities of elements, which of the following bonds should be most polar Si-Cl Si-S Si-P Si-C
Si-Cl
the transfer of an electron from a sodium atom ti a chlorine atom is an example of
a chemical change
a molecule is
a group of atoms bonded together
all ionic compounds
are completely different from the elements that form them
the atoms of a polar covalent bond tend to be of different elements are of the same element include a metal and a nonmetl
are of the same element
two ions attracted to one another
by an electric force created by their opposite charge
both nitrogen and phosphorus are able to attract three more elections to their outer shells because a.) these electrons are able to pair with unpaired valence electrons b.) there are three more spaces available their outermost shells c.) all the above
c
what type of bond would you except to form between carbon and oxygen
covalent
what type of bond would you expect to form between Nitrogen and Oxygen
covalent
what type of chemical bond would you expect between a silicon atom (Si,atomic number 14) and an oxygen atom (O,atomic number 8)
covalent
atoms of a covalent bond are held together by the
electrical attraction two nuclei have for shared electrons
which elements tend to form compounds
elements found on opposite sides of the periodic table
What type of bond would you expect to form between Lithium and Sulfur
ionic
what type of bond would you expect to form between Magnesium and Oxygen
ionic
what type of bond would you expect to form between calcium and fluoride
ionic
what type of chemical bond would you expect between a calcium atom and a chlorine atoms
ionic
covalent and ionic bonds differ in that
ionic bonds don't involve sharing of electrons
the individual particles of an ionic crystal are
ions
The potassium ion, K1+ is small than the neutral potassium atom (K atomic number 19) because
it has one less shell containing electrons
which of the following statements are true metallic elements tend to form (+) ions, while nonmetallic elements tend to form (-) ions nonmetallic elements tend to form (+) ion, while metallic elements tend to form (-) ions
metallic elements tend to form (+) ions, while nonmetallic elements tend to form (-) ions
what type of chemical bond would you expect between two neon atoms
none of the above
the reason lithium tends to lose electrons and nitrogen tends to gain electrons is that
nonmetal have a strong attraction for electrons and metals have a weak attraction for electrons
which element tend to form covalent bonds
nonmetallic elements
if all the bonds in a molecule are non polar, the molecule is
nonpolar
what type of chemical bond would you expect between two carbon atoms?
nonpolar covalent
what type of chemical bond would you expect between two chlorine atoms
nonpolar covalent
why do non polar substances tend to boil at relatively low temperatures nonpolar substances are not good conductors of heat if they did not boil at low temperatures, they wouldn't be gases at room temp generally speaking, non polar molecule are not as massive as polar molecules not much hear is required to separate non polar molecule from one another
not much hear is required to separate non polar molecule from one another
the outer shell of two atoms that are covalently bonded
overlap
choose the correct for PI3
phosphorus triiodide
the boiling temperature of water is so much higher than that of N2 because water molecule are more massive composed of few atoms polar nonpolar
polar
what type of chemical bond would you expect between a silicon atom and and oxygen atoms
polar covalent
the roman numerals is parenthesis in a compound name indicates
the amount of positive charge of the cation
the alkali metals (group 1) tend to form 1+ ions while the alkali- east metal (group 2 ) tend to form 2+ ions because
the charges of these ions corresponds to the number of valence electrons that may be lost
the greater the difference in electronegativity between two covalently bonded atoms, the closer together the atoms are located on the periodic table the greater the polarity the smaller the polarity
the greater the polarity
an individual carbon-oxygen bond is polar. Yet carbon dioxide,CO2, which has two carbon-oxygen bond, is non polar because
the two carbon- oxygen bonds in CO2 are oriented 180 from each other
chemical bonds are formed by
the unpaired electrons in an atom;s valence shell
How many atomic shells are completely filled for the chlorine ion, Cl1- (Cl atomic number 17)
three
how many covalent bonds can nitrogen form
three
how many covalent bonds can oxygen form
two
how many electrons are shared in a single covalent bond
two
in a molecular dipole electrons are distributed unevenly because they tend to stay close to the atom they were with originally evenly since they move so fast unevenly because the nuclear charge at one end of the molecule is stronger thus pulling electrons toward that side evenly so they can achieve the farthest possible distance from one another
unevenly because the nuclear charge at one end of the molecule is stronger thus pulling electrons toward that side
How many covalent bonds can Hilium form
zero