Card Set Information
intro chemistry isotopes ionic compounds
introduction to chemistry, atomic mass, ionic compounds
Formula for Density (D) using Mass (m) and Volume (V)
Ag has ___ neutrons
Zn has an atomic mass is 109, 47 protons (same as the number of the number of electrons and atomic number).
# of neutrons=109-47=62
what's an isotope?
the difference in atomic mass changes the number of neutrons.
The number of electrons is = to the # of protons.
how is Atomic mass created?
(Sum the percent abundance of isotopes converted to decimal X the atomic mass of an molecule).
What are ionic compounds?
composed of ions, usually metals and non-metals, or polyatomic ions.
combo of (metals & polyatomic ions; polyatomic ions; or metals & non-metals)
1+ charged ions include:
Li, Na, K, Rb, Cs
2+ charged ions
Be, Mg, Ca, Sr, Ba
3+ charged ions
Transitions metals charge
vary and are located in the center of the periodic table
F, Cl, Br, I
charge on polyatomic elements
must be memorized
+ or - ionic compounds named first
name +ion first
ending to non-polyatomic ions with negative charge
Name the following ionic compound:
Which Ti do you use:
The ^ 4+ is switched to the lower right
What do hydrates mean?
tell you the # of polyatomic elements and prefix to use
what prefix do you use with 1 hydrate
what prefix do you use with 2 hydrate
what prefix do you use with 3 hydrate
what prefix do you use with 4 hydrate
what prefix do you use with 5 hydrate
what prefix do you use with 6 hydrate
steps to writing compounds by crossing charges
1) identify ions present
2) cross the charges
3) divide subscript by lowest common denominator