Studied by 1 personTrue or false? In naming ionic compounds, the cation is always named first and the anion second.
TRUE
The correct name for LiCl is
lithium chloride
The correct name for FeO is
iron(II) oxide
Which of the following formulas is INCORRECT? (State correct answer)
CsCl2, (Correct would be CsCl)
Titanium(IV) oxide has the formula
TiO2
The correct name for P2O5 is
diphosphorus pentoxide
What is the formula for sulfur trioxide?
SO3
The formula for calcium hydrogen sulfate is
Ca(HSO4)2
The correct formula for ammonium sulfate is
(NH4)2SO4
Which of the following is named incorrectly? (Provide Correct name)
Fe(OH)2; iron(III) hydroxide. [It would actually be iron(II) hydroxide]
The name for NH4Br is
ammonium bromide
The name for Ba(NO3)2 is
barium nitrate
The correct formula for sodium sulfide is
Na2S
What is the formula for cobalt(II) chloride
CoCl2
The correct formula for carbon monoxide is
CO
The name for the compound Fe2O3 is
iron(III) oxide
The name for the compund Al(OH)3 is
aluminum hydroxide
The mass of a single atom is very small and is measured using the
unified atomic mass unit (u) sometimes called the atomic mass unit (amu)
The average atomic mass that is printed on the periodic table is a
weighted average that takes into account that some isotopes are more common than others
what unit of measurement is used for measuring atoms?
The mole
One mole of atoms =
6.022 x 10^ 23 atoms
1 mole =
602,200,000,000,000,000,000,000
the mole is also called
Avogadro’s Number
Molar Mass =
the mass of one mole of an element’s atoms OR the mass of one mole of a compound’s molecules
Element Examples: (of calculating molar mass)
a) hydrogen (as single atoms) has a molar mass = 1.01 grams/mole b) oxygen (as single atoms) has a molar mass = 16.00 grams/mole c) carbon (as single atoms) has a molar mass = 12.01 grams/mole
Compound Examples: (of calculating molar mass)
a) water (H 2 O molecules) has a molar mass of: 1.01 + 1.01 + 16.00 = 18.02 grams/mole b) methane (CH 4 molecules) has a molar mass of: 12.01 + 1.01 + 1.01 + 1.01 + 1.01 = 16.05 grams/mole
diatomic molecule
a molecule made up of 2 atoms
elements that exist as diatomic molecules when...
they are "free" in nature" (they're not bonded with anything else)
the 7 diatomic elements are...
Hydrogen (H2) Nitrogen (N2) Oxygen (O2) Flourine (F2) Chlorine (Cl2) Bromine (Br2) Iodine (I2)
where do you find the diatomic elements?
Hydrogen is a squirrel by itself over in the tree of metals The rest form a 7 shape in the nonmetals
how do we remember the diatomic elements?
Henry (H2) Never (N2) Opens (O2) Fish (F2) Cans (Cl2) Because (Br2) Icky (I2)
"Ide"
has no oxygen
"Ite"
has some oxygen
"ate"
has more oxygen than "ite"
how to calculate average atomic mass
multiply precentage by the isotope number for each one and then add the three together
Note
Flashcard