Chapter 3: Understanding Matter
Which Greek philosopher first coined the term atom (in Greek: “atomos”, which means indivisible)?
Democritus
What is the maximum number of electrons that can occupy a d energy sublevel?
10
What is the name of the family of elements in Group IIA/2?
Alkaline earth metals.
Write the chemical formula for copper (I) oxide.
Cu2O
What is the term for the property of a metal to be drawn into a wire?
Ductile
What is a direct change of state from a gas to a solid?
Deposition
How many neutrons are in the nucleus of an atom of 200Hg?
120
What is the term for two different ions with the same electron configuration?
Isoelectronic
Write the correct name for V2O5.
Divanadium pentaoxide
What is the predicted ionic charge for a Pb ion?
2+ or 4+
The addictive drug morphine, C17H19NO3, is used for the treatment of pain. What is the number of atoms in one molecule of morphine?
40
What is the noble gas notation for the electron configuration of an aluminum atom?
[Ne] 3s2 3p1
Draw the electron dot formula for each of the following elements:
a) Si
b) Xe
c) K
d) I
Si: 4 valence electrons
Xe: 8 valence electrons
K: 1 valence electron
I: 7 valence electrons
Write the correct name for Fe(OH)3
Iron (III) hydroxide
What is the general trend for metallic character in the periodic table?
Decreases left to right, and bottom to top
If 2.43 g of magnesium reacts with oxygen to produce 4.03 g of magnesium oxide, what is the mass of reacting oxygen gas?
1.60 g
Give the electron configuration for chromium.
1s22s22p63s23p43d94s2
What is ionization energy?
The minimum amount of energy required to remove a valence electron. This trend increases up, and to the right of the periodic table. Noble gases require the most ionization energy because they have already achieve an octet (they are happy!).
Write the correct name for HF.
Hydrofluoric acid.
Who published the first atomic theory? (He was a 19th century Quaker).
John Dalton
What does IUPAC stand for?
International Union of Pure and Applied Chemistry
Element Y has two natural isotopes: Y-63 and Y-65. Calculate the percent abundance of each isotope if the average atomic mass is 64.53 amu.
Mass 63: 24% abundance.
Mass 65: 76% abundance.
You must write both the FULL configuration, and the NOBLE GAS configuration for a cadmium 2+ ion.
1s22s22p63s23p63d104s24p64d10 and [Kr] 4d10
Write the correct name for H2SO3
Sulfurous acid
Write the formula for barium permangante.
Ba(MnO4)2