Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
42 Cards in this Set
- Front
- Back
|
electronegativity
|
Attraction for an additional electrons causing the atoms to combine
|
|
|
Ionic characteristics
(7 things) |
transfer electrons
electronegativity is greater than 1.67 conducts electricity soluble in water high melting point compound always polar |
|
|
Covalent characteristics
(6 things) |
share electrons
electronegativity is less than 1.67 nonconductors insoluble low melting point molecule |
|
|
What happens to ionic electrons
|
Transferred
|
|
|
What happens to covalent electrons
|
Shared
|
|
|
What happens to metallic electrons
|
Delocalized
|
|
|
What has both ionic and covalent characteristics
|
Polyatomics
|
|
|
Atoms with higher electronegativities are
|
Negative
|
|
|
Atoms with lower electronegativities are
|
Positive
|
|
|
If atoms are equal in electronegativity...
|
it is a nonpolar molecule
|
|
|
linear molecule
|
If the central atom has 2 electrons in the outer most level
|
|
|
Bond angle of a linear molecule
|
180
|
|
|
trigonal planar
|
If the central atom has 3 electrons in the outer most level
|
|
|
Bond angle of a trigonal planer
|
120
|
|
|
tetrahedral
|
If the central atoms has 4 electrons in the outer most level
|
|
|
Bond angle of a tetrahedral
|
109.5
|
|
|
Modified tetrahedral
|
If the central atoms has five or six electrons in the outer most level
|
|
|
Bond angle of a modified tetrahedral
|
Less than 109.5
|
|
|
central atom
|
The element in the molecular formula that has the lowest electronegativity
|
|
|
A polar molecule is also known as...
|
dipole
|
|
|
A molecule is polar when...
|
You are able to separate positive and negative charges with a straight line
|
|
|
van der Waals inter molecular forces
|
The attraction between two separate molecules
|
|
|
dipole dipole
|
The attraction between 2 polar molecules
Strongest |
|
|
dipole induced dipole
|
The attraction between a polar molecule and a nonpolar molecule that is forced to be polar
|
|
|
dispersion
(London forces) (3 things) |
Between 2 nonpolar
Temporary Most common |
|
|
All acids are...
|
Polar
|
|
|
Weakest electron pair repulsion
|
shared-shared
|
|
|
Medium electron pair repulsion
|
shared-unshared
|
|
|
Strongest electron pair repulsion
|
unshared-unshared
|
|
|
A sigma bond is...
(6 things) |
First bond
s-s overlap s-p overlap p-p tip to tip s-hybrid p-hybrid |
|
|
A pi bond is...
(2 things) |
Second or third bond
p-p parallel overlap |
|
|
What forms hybrid bonds?
|
Carbon
|
|
|
How are hybrid bonds formed?
|
Carbon blends or merges orbitals sp3 sp2 or sp
|
|
|
ane
(3 things) |
sp3
single bonds saturated |
|
|
ene
(3 things) |
sp2
double bond unsaturated |
|
|
yne
(3 things) |
sp
triple bond unsatrated |
|
|
chemical bond
|
When electron clouds overlap
|
|
|
What is an ionic bond
|
Electrostatic attraction between positive and negative ions
|
|
|
What are the two steps to making an ionic bond happen
|
1. Electrons are transferred
2. Electrostatic forces pull ions together |
|
|
Does energy need to be added or taken away in order to remove an electron from an atom
|
Added
|
|
|
Is energy absorbed or released when a chemical bond is made
|
Released
|
|
|
valence electrons
|
Outermost electrons
|
