Chap 3 - stichometry, formulae

Question 1

naming compounds: metal, non-metal - rules

Answer 1

-metal first
non-metal has “ide” at end
eg. magnesium chloride

Question 2

naming compounds: non-metal, non-metal - rules

Answer 2

-hydrogen first
-non-metal with lower group goes first
-non-metal with lower down goes first
eg, hydrogen chloride, nitrogen dioxide, sulfur oxide

Question 3

silver ion

Answer 3

Ag +

Question 4

ammonium ion

Answer 4

NH4 +

Question 5

hydroxide ion

Answer 5

OH -

Question 6

nitrate ion

Answer 6

NO3 -

Question 7

sulfate

Answer 7

SO4 2-

Question 8

cabonate

Answer 8

CO3 2-

Question 9

define molecular formula

Answer 9

number of each type of atoms present (chemical formula)

Question 10

define empirical formula

Answer 10

simplest whole number ratio of atoms present

Question 11

what does -> mean

Answer 11

to make

Question 12

what are the things before the arrow called

Answer 12

reactants

Question 13

what are the things after the arrow called

Answer 13

products

Question 14

what are the arrows above

Answer 14

conditions

Question 14

what must you do when balancing equations

Answer 14

make use the number of atoms are equal in both sides

Question 14

what is the standard measurement of atoms

Answer 14

carbon 12

Question 15

why is carbon 12 the standard

Answer 15

its the most abundant element

Question 16

define relative atomic mass

Answer 16

the average mass of isotopes of an element compared to 1/12 of the mass of an atom of carbon 12

Question 17

define atomic mass

Answer 17

proton + neutron

Question 18

define atomic number

Answer 18

proton

Question 19

how do you get the average atomic mass of an element

Answer 19

(mass number of isotope x % of type of isotope) + (….) / 100

Question 20

define relative molecular mass

Answer 20

sum of relative atomic masses in molecular formula

Question 21

define relative formula mass

Answer 21

sum of relative atomic mass in empirical formula