Chemistry Lect 1

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^A_ZX
- A: mass number (prots and neuts)
- Z: atomic number (prots)
- X: element symbol
How is 1 mol measured in ¹²C?

1 mol = # of 'C' atoms in 12g of ¹²C
Metals
- Under the metaloid staircase
- Tend to loose e^-s
- Solids at room temp (except mercury)
- Form ionic oxides
Non-Metals
- Lower m.p. than metals
- Form covalent oxides
- Above metaloid staircase
Periodic Trends: Increase L --> R and Down --> Up
- Energy of Ionization - E nec. to detatch an e^-
- Electronegativity - tend to attract an e^- in a shared bond
- Electron Affinity - willingness to accept an e^-
Periodic Trends: Increase R --> L and Up --> Down
- Atomic Radius
- Metallic Character
Energy is _____ by forming a bond.

lowered
Empirical vs. Molecular Formula

Empirical is the reduced form
Reaction Types
- Combustion
- Single Displacement
- Double Displacement
- Combination
- Redox
- Metathesis
Cations vs. Anions
- Cations - Pos (+)
- Anions - Neg (-)
Naming Ionic Compounds:
- Simple Anions: -ide (i.e. hydride H^-, hydroxide OH^-)
- From Least "O"s to most: hypo- -ite, -ite, -ate, per- -ate
- ClO^-: hypochlorite
- ClO₂^-: chlorite
- ClO₃^-: chlorate
- ClO₄^-: perchlorate
Naming Acids
- Based on the corresponding anion
- If it ends in -ide: hydro- -ic
- More "O"s: -ic
- Less "O"s: -ous
Helsenberg Uncertainty:

The more we know about the momentum of a particle the less we know about its position
Quantum Numbers:
Hund's Rule:
- e^-s will not fill any orbital in the same subshell until all the orbitals contain at least 1 e^-
- all the unpaired e^-s will have parallel spins
How to write out quantum numbers:

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Card Set

Chemistry Lect 1

Description

Atoms, Molecules, and Quantum Mechanics

Updated

2011-01-10T06:03:35Z

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