Quiz 3 Material (Bonds & Compounds)

Question 1

Compound

Answer 1

Pure substance formed by chemically combining two or more elements

Question 2

bonds formed through the sharing of electrons are…

Answer 2

covalent bonds

Question 3

bonds formed through the complete transfer of electrons are…

Answer 3

ionic bonds

Question 4

ionic compounds consist of

Answer 4

positive and negative ions

Question 5

ionic compounds are formed between

Answer 5

metal +nonmetal
metal + polyatomic ion
NH4 + nonmetal/polyatomic ion

Question 6

ionic formula

Answer 6

neutral, consists of positively and negatively charged ions

Question 7

ionic formula is written as….

Answer 7

total positive charge = total negative charge

Question 8

write the formula for sodium nitride, a compound containing Na+ and N3- ; explain how to check your answer

Answer 8

Na3N; it’s correct because the there are three positive +1 Na charges, and one negative 3- N charge, which when combined equal zero

Question 9

write the formula for Ba2+ and Cl-

Answer 9

BaCl2

Question 10

write the formula for Al3+ and Cl-

Answer 10

AlCl3

Question 11

write the formula for Mg2+ and N3-

Answer 11

Mg3N2

Question 12

what is a cation?

Answer 12

the metal in a compound

Question 13

what is an anion?

Answer 13

the nonmetal in a compound

Question 14

when naming an ionic compound with two elements, what are the steps?

Answer 14

-identify the cation/anion
-name the cation first, followed by the anion but replace the ending of the anion with -ide
-DO NOT change the names of polyatomic ions

Question 15

name NaCl

Answer 15

sodium chloride

Question 16

name K2S

Answer 16

potassium sulfide

Question 17

name MgO

Answer 17

magnesium oxide

Question 18

name CaI2

Answer 18

calcium iodide

Question 19

name Al2S3

Answer 19

aluminum sulfide

Question 20

write the formula for a compound containing Na+ and PO4^3

Answer 20

Na3PO4

Question 21

write the formula for Ba2+ and NO3-

Answer 21

Ba(NO3)2

Question 22

write the formula for Hg2^2+ and PO4^3-

Answer 22

(Hg2)3(PO4)2

Question 23

write the formula for Hg2^2+ and Cl- ; explain

Answer 23

Hg2Cl2 because since Hg is polyatomic, the 2 cannot be moved

Question 24

write the formula for Pb4+ and S2-

Answer 24

PbS2

Question 25

name the compounds: -CaO -KBr -Al2O3 -MgCl2 -Na3PO4

Answer 25

-calcium oxide -potassium bromide -aluminum oxide -magnesium chloride -sodium phsophate

Question 26

transition metals form

Answer 26

positive ions

Question 27

most transition metals and group 4a metals form ____ with the exception of Zn2+,Ag+, and Cd2+, which form ____

Answer 27

2 or more positive ions; only one ion

Question 28

roman numerals are used to identify ionic charge in....

Answer 28

transition metals with two or more positive ions

Question 29

name the ion: Cr2+ Cr3+

Answer 29

chromium (II) chromium (III)

Question 30

name the ions: -Pb2+ -Pb4+

Answer 30

-Lead (II) -Lead (IV)

Question 31

name FeCl2; explain

Answer 31

iron (II) chloride -work backwards so FeCl2 becomes Fe^2+ and Cl^-1 -then name the Fe according to it's charge (II) -name the anion (chloride)

Question 32

name the following: -Fe2S3 -CuO -Cr2O3

Answer 32

-Iron (III) Sulfide -Copper (II) Oxide -Chromium (III) Oxide

Question 33

write the formula for the following: -potassium sulfide -iron(III) chloride -copper(I) nitride -lead(IV) oxide

Answer 33

-K2S -FeCl3 -Cu3N -PbO2

Question 34

how do we name variable compounds involving polyatomic ions?

Answer 34

name the positive ion first, followed by the name of the polyatomic ion

Question 35

name the following: -MgS -MgSO3 -MgSO4

Answer 35

-magnesium sulfide -magnesium sulfite -magnesium sulfate

Question 36

name the following: -Ca(ClO3)2 -CaCl2 -Ca(ClO2)2

Answer 36

-calcium chlorate -calcium chloride -calcium chlorite

Question 37

name the following: -Mg(NO3)2 -Cu(ClO3)2 -PbO2

Answer 37

-magnesium nitrate -copper (II) chlorate -lead (IV) peroxide

Question 38

the formula of an ionic compound containing a polyatomic ion must have....

Answer 38

a charge balance that equals zero

Question 39

the formula of an ionic compound with two or more polyatomic ions has....

Answer 39

the polyatomic ions in parentheses

Question 40

write the correct formulas for the following: -aluminum nitrate -iron(III) hydroxide -sodium phosphate

Answer 40

-Al(NO3)3 -Fe(OH)3 -Na^+PO4^3-

Question 41

two nonmetal atoms from groups ______ form covalent bonds

Answer 41

4A, 5A, 6A, 7A

Question 42

what are the diatomic elements?

Answer 42

hydrogen nitrogen oxygen fluorine chlorine bromine iodine

Question 43

why and where do we use prefixes when naming compounds?

Answer 43

we use them when naming covalent compounds, because two nonmetals can form two or more different compounds

Question 44

name the prefixes used to name covalent compounds

Answer 44

mono, di, tri, tetra, penta, hexa, hepta, octa, nona, deca

Question 45

name SO3

Answer 45

sulfur trioxide

Question 46

name P4S3

Answer 46

tetraphosphorus trisulfide

Question 47

name the following: -SiCl4 -P2O5 -Cl2O7

Answer 47

-silicon tetrachloride -diphosphorus pentoxide -dichlorine heptoxide

Question 48

name N2O

Answer 48

dinitrogen monoxide

Question 49

write the formula for carbon disulfide

Answer 49

CS2

Question 50

write the formula for dinitrogen trioxide

Answer 50

N2O3

Question 51

covalent compounds consist of ____

Answer 51

ONLY nonmetals

Question 52

when naming molecular compounds, we....

Answer 52

use greek prefixes and change 2nd nonmetal ending with -ide

Question 53

when naming ionic compounds with metals with one charge only, we....

Answer 53

metal name + nonmetal name (ending -ide)

Question 54

when naming ionic compounds with metals with more than one charge, we...

Answer 54

metal name (charge as roman numeral) + nonmetal name (ending -ide)

Question 55

when naming ionic compounds with polyatomic ions, we....

Answer 55

leave the name as it is

Question 56

identify each as ionic or covalent, and name accordingly: -SO2 -BaCl2 -(NH4)3PO4 -Cu2CO3 -N2O4

Answer 56

-covalent, sulfur dioxide -ionic, barium chloride -ionic (polyatomic), ammonium phosphate -ionic, copper(I) carbonate -covalent, dinitrogen tetroxide

Question 57

acids with __ and ___ are named with the ___ and end with ___

Answer 57

hydrogen, nonmetal ; prefix hydro- , -ic acid

Question 58

name HCl

Answer 58

hydrochloric acid

Question 59

in an acid, what is the proper suffix for polyatomics ending in -ate and -ite?

Answer 59

-ic and -ous respectively

Question 60

name HBr

Answer 60

hydrobromic acid

Question 61

name H2CO3

Answer 61

carbonic acid

Question 62

name HBrO2

Answer 62

bromous acid