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