chemistry

?
  • Created by: maiwand
  • Created on: 07-04-13 19:08
First ionisation energy
Of an element is the energy required to remove 1 electron from each atom in 1 mole of gaseous atoms
1 of 17
atomic orbital
is a region within an atom that can hold up two electrons,with oppsite spins
2 of 17
ionic bonding
electrostatic attraction between two oppositely charged ions
3 of 17
covalent bond
is a bond formed by a shared pair of electrons
4 of 17
dative covalent bond
is a shaped pair of electron which has been provided by one of the bonding atoms only
5 of 17
simple molecular lattice
is a 3D structure of molecules,bonded together by weak intermolecular forces
6 of 17
electronegativity
the ability of an atom to attract the bonding electrons in a covalent bond
7 of 17
permanant dipole
a small charge difference across a bond that results from a difference in the electronegativity of the bonded atoms
8 of 17
permenent dipole-dipole forces
is a weak attractive force between permenent dipoles in neigbouring polar molecules
9 of 17
van der waals forces
are attractive forces between induced dipoles in neighbouring molecules
10 of 17
hydrogen bonding
is a strong dipole-dipole attraction between: >an electron deficent hydrogen atom on one molecule and a lone pair of electrons on a highly electronegative atom on a different molecule
11 of 17
ice is less dense than water
because ice has a an open lattice with hydrogen bonds holding the water molecules apart. so when ice melts, the rigid hydrogen bonds collapse, allowing the H20 molecules to get together
12 of 17
high freezing,M.P and B.P
the hydrogen bonds are extra forces over and above van der waals forces, > these extra forces have to be overcome in order to melt or boil water. this results in h20 having higher melting and boiling point rather than expected
13 of 17
metallic bonding
is the electrostatic attraction between positive metal ions and delocalised electrons
14 of 17
giant metallic lattice
a 3d structure of positive ions and delocalised electrons bonded together by strpong metallic bonds
15 of 17
periodicity
is a regular periodic variation of properties of elements with atomic number and position in the periodic table
16 of 17
disproportionation
is a reaction in which the same element is both reduced and oxidized
17 of 17

Other cards in this set

Card 2

Front

is a region within an atom that can hold up two electrons,with oppsite spins

Back

atomic orbital

Card 3

Front

electrostatic attraction between two oppositely charged ions

Back

Preview of the back of card 3

Card 4

Front

is a bond formed by a shared pair of electrons

Back

Preview of the back of card 4

Card 5

Front

is a shaped pair of electron which has been provided by one of the bonding atoms only

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »