the power of an atom to attract electron density within a covalent bond
3 of 31
polar bond
asymmetric distribution of electron density in a covalent bond
4 of 31
ionic bond
electrons are transferred from one atom to another between oppositely charged ions with strong electrostatic forces of attraction between them
5 of 31
metallic bonding
outer electrons are delocalised within the lattice of metal ions
6 of 31
covalent properties
low melting points - weak intermolecular forces, poor conductors of electricity as no free moving ions
7 of 31
ionic properties
high melting and boiling points, brittle as layers cant slide over each other
8 of 31
metallic properties
high melting point, malleable and ductile as layers can slide over each other
9 of 31
linear shape
2 e- pairs - 180 degrees
10 of 31
trigonal planar
3 e- pairs - 120 degrees
11 of 31
bent shape
2e- and 1lp - 118 degrees
12 of 31
tetrahedral
4e- pairs - 109.5 degrees
13 of 31
trigonal pyramidal
3e- and 1lp - 107 degrees
14 of 31
bent
2e- and 2lp - 104.5 degrees
15 of 31
trigonal bipyramidal
5e- pairs - 90 and 120 degrees
16 of 31
trigonal pyramidal or see saw
4e- and 1lp - 119 and 89 degrees
17 of 31
trigonal planar or T-shape
3e- and 2lp - 120 degrees or 89 degrees
18 of 31
octahedral
6e- pairs - 90 degrees
19 of 31
square pyramid
5e- and 1lp - 89 degrees
20 of 31
square planar
4e- and 2lp - 90 degrees
21 of 31
collision theory
particles must collide with the sufficient energy with the correct orientation
22 of 31
effect of surface area on collisions
only particles on the surface of a solid will collide with particles of other reactant, if SA increased more particles on surface meaning more successful collisions
23 of 31
activation energy
minimum energy required for a successful collision
24 of 31
effect of conc on collisions
as conc increases so does the rate of reaction as there are more particles in a given volume so more successful collisions
25 of 31
effect of increase of pressure of a gas on collisions
more molecules in a given volume so more likely successful collisons
26 of 31
effect of temp on collisions
more successful collisions as more molecules have the activation energy
27 of 31
effect of a catalyst on rate of reaction
catalysts decrease the rate of reaction as it lowers the activation energy so more molecules have it
28 of 31
catalyst
lowers the activation energy by providing an alternative pathway, without being used up
29 of 31
homogeneous
same state as reactants
30 of 31
heterogeneous
different state to reactants
31 of 31
Other cards in this set
Card 2
Front
one atom povides both electrons
Back
dative covalent bond
Card 3
Front
the power of an atom to attract electron density within a covalent bond
Back
Card 4
Front
asymmetric distribution of electron density in a covalent bond
Back
Card 5
Front
electrons are transferred from one atom to another between oppositely charged ions with strong electrostatic forces of attraction between them
Comments
No comments have yet been made