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Chem 110 > Quiz 3 Material (Bonds & Compounds) > Flashcards

Quiz 3 Material (Bonds & Compounds) Flashcards

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1
Q

Compound

A

Pure substance formed by chemically combining two or more elements

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2
Q

bonds formed through the sharing of electrons are…

A

covalent bonds

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3
Q

bonds formed through the complete transfer of electrons are…

A

ionic bonds

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4
Q

ionic compounds consist of

A

positive and negative ions

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5
Q

ionic compounds are formed between

A

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

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6
Q

ionic formula

A

neutral, consists of positively and negatively charged ions

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7
Q

ionic formula is written as….

A

total positive charge = total negative charge

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8
Q

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

A

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

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9
Q

write the formula for Ba2+ and Cl-

A

BaCl2

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10
Q

write the formula for Al3+ and Cl-

A

AlCl3

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11
Q

write the formula for Mg2+ and N3-

A

Mg3N2

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12
Q

what is a cation?

A

the metal in a compound

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13
Q

what is an anion?

A

the nonmetal in a compound

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14
Q

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

A

-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

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15
Q

name NaCl

A

sodium chloride

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16
Q

name K2S

A

potassium sulfide

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17
Q

name MgO

A

magnesium oxide

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18
Q

name CaI2

A

calcium iodide

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19
Q

name Al2S3

A

aluminum sulfide

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20
Q

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

A

Na3PO4

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21
Q

write the formula for Ba2+ and NO3-

A

Ba(NO3)2

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22
Q

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

A

(Hg2)3(PO4)2

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23
Q

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

A

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

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24
Q

write the formula for Pb4+ and S2-

A

PbS2

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25
Q

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

A

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

26
Q

transition metals form

A

positive ions

27
Q

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

A

2 or more positive ions; only one ion

28
Q

roman numerals are used to identify ionic charge in….

A

transition metals with two or more positive ions

29
Q

name the ion:
Cr2+
Cr3+

A

chromium (II)
chromium (III)

30
Q

name the ions:
-Pb2+
-Pb4+

A

-Lead (II)
-Lead (IV)

31
Q

name FeCl2; explain

A

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)

32
Q

name the following:
-Fe2S3
-CuO
-Cr2O3

A

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

33
Q

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

A

-K2S
-FeCl3
-Cu3N
-PbO2

34
Q

how do we name variable compounds involving polyatomic ions?

A

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

35
Q

name the following:
-MgS
-MgSO3
-MgSO4

A

-magnesium sulfide
-magnesium sulfite
-magnesium sulfate

36
Q

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

A

-calcium chlorate
-calcium chloride
-calcium chlorite

37
Q

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

A

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

38
Q

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

A

a charge balance that equals zero

39
Q

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

A

the polyatomic ions in parentheses

40
Q

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

A

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

41
Q

two nonmetal atoms from groups ______ form covalent bonds

A

4A, 5A, 6A, 7A

42
Q

what are the diatomic elements?

A

hydrogen
nitrogen
oxygen
fluorine
chlorine
bromine
iodine

43
Q

why and where do we use prefixes when naming compounds?

A

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

44
Q

name the prefixes used to name covalent compounds

A

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

45
Q

name SO3

A

sulfur trioxide

46
Q

name P4S3

A

tetraphosphorus trisulfide

47
Q

name the following:
-SiCl4
-P2O5
-Cl2O7

A

-silicon tetrachloride
-diphosphorus pentoxide
-dichlorine heptoxide

48
Q

name N2O

A

dinitrogen monoxide

49
Q

write the formula for carbon disulfide

A

CS2

50
Q

write the formula for dinitrogen trioxide

A

N2O3

51
Q

covalent compounds consist of ____

A

ONLY nonmetals

52
Q

when naming molecular compounds, we….

A

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

53
Q

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

A

metal name + nonmetal name (ending -ide)

54
Q

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

A

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

55
Q

when naming ionic compounds with polyatomic ions, we….

A

leave the name as it is

56
Q

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

A

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

57
Q

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

A

hydrogen, nonmetal ; prefix hydro- , -ic acid

58
Q

name HCl

A

hydrochloric acid

59
Q

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

A

-ic and -ous respectively

60
Q

name HBr

A

hydrobromic acid

61
Q

name H2CO3

A

carbonic acid

62
Q

name HBrO2

A

bromous acid

Chem 110 (9 decks)

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