Chapter 4

Question 1

molecular molar mass

Answer 1

g molecule/mol molecule

Question 2

percentages of elements or molecules

Answer 2

mass element/mass molecule x100

Question 3

emperical formula

Answer 3

simplest form of the true formula, where integers are reduced by a common denominator

Question 4

true formula

Answer 4

actual number of elements in a molecule

Question 5

combustion reaction

Answer 5

sample+O2(g)—>CO2(g)+H2O(l)
before arrow=starting materials/reactants
after arrow=products

Question 6

the law of conservation of mass

Answer 6

no atoms are created/destroyed(this lets you determine the g/mol/etc… of each element you have in the combustion reaction)

Question 7

nomenclature

Answer 7

naming of molecules

Question 8

nomenclature inorganic naming (metal/nonmetal)

Answer 8

• binary compounds (two elements)
• metal comes first in the naming and is the same name as what is found on the periodic table (more electropositive=first-the metal will always carry a + charge)
• nonmetal comes last in the naming, and they will have a suffix change to it–>ide (more electronegative=last-the nonmetal carries a - charge)

Question 9

Group 1A charge

Answer 9

+1

Question 10

Group 2A charge

Answer 10

+2

Question 11

Group 3A charge

Answer 11

+3

Question 12

Group 7A charge

Answer 12

-1

Question 13

Group 6A charge

Answer 13

-2

Question 14

Group 5A charge

Answer 14

-3

Question 15

nomenclature inorganic naming (transition metals/nonmetals)

Answer 15

• transition metals do not have definitie charge-they have more than one possible + charge
• when naming you write metal and then nonmetal
• two naming systems for transition metals
  1) Roman numeral
  2) Latin naming system

Question 16

Roman numeral naming system for transition metals

Answer 16

a roman numeral follows the metal name indicating the charge on the metal +

Question 17

latin naming system for transition metals

Answer 17

suffix change of -ous is lower + charge on metal OR -ic is higher + charge on metal

Question 18

nomenclature organic compound naming (nonmetal/nonmetal)

Answer 18

• more electropositive element is first in the naming (name off periodic table)
• more electronegative element is last in the naming (-ide suffix change)
• greek prefixes are used to tell us how many of the element we have

Question 19

greek prefix for 1

Answer 19

mono

Question 20

greek prefix for 2

Answer 20

di

Question 21

greek prefix for 3

Answer 21

tri

Question 22

greek prefix for 4

Answer 22

tetra

Question 23

greek prefix for 5

Answer 23

penta

Question 24

greek prefix for 6

Answer 24

hexa

Question 25

greek prefix for 7

Answer 25

hepta

Question 26

greek prefix for 8

Answer 26

octa