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Flashcards in Chem4 Deck (24)
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1

Short =

height

2

Long=

Little

3

Electron Orbitals

Describes a region of 3-d space around a nucleus where the problem of finding an e- is greatest
S contains 1 orbitals
P contains 3 orbitals
D contains 5 orbitals
F contains 7 orbitals

4

Orbitals occupancy

An orbital may be occupied by 0,1, or 2 e-

5

First ionization energy
Pt trend

Increase ^ & >

6

EA

Energy when a neutral atom gains an e- to form a (-) ion in the gas phase

7

Ionic Radius

The average radius of an ion

8

Electromagnetic Radiation

Energy traveling in the form of waves

9

Below sea level

Above 100°C

10

Above sea level

Below 100°C

11

Crystalline solid

Particles (atoms, molecules, ions) are packed in a definite, repeated, geometrical pattern which extends out in 3-D

12


Amorphous solid

Particles are packed irregularly, they lack structure, looks like a liquid frozen in time

13

Ionic crystals

Forces holding crystals together: IONIC BONDS

properties: high melting point(often 800°C)

Water solubility : soluble

Conductivity:(l),(aq) can conduct

Examples: NaCl

14

Molecular crystal

Forces holding crystals together: covalent compound

Properties: low melting point

Solubility: non soluble

Conductivity: poor

15

Covalent network solids

Ex: Diamonds

Properties: high melting point

Solubility: insoluble In H2O

Conductivity: poor

16

Metallic crystals

Metal nuclei: nuclei of metal is the point
VE
Properties: depends (melting point varies)

Solubility: non soluble

Conductivity: strong

17

solid------------->liquid

Melting or fusion

18

Liquid--------->gas

Boiling or vaporization

19

Gas----------->Solid

Deposition

20

Liquid--------------->solid

Sublimation

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Gas----------->liquid

Condensation

22

Ideal gas law

PV=nRT

23

Density

M
---
V

24

Air =

O2 and N2