Flashcards in Bonding And Structure Deck (41)
Do ionic compounds dissolve in polar solvents?
Why do ionic compounds dissolve/do not dissolve in polar solvents?
The polar water molecules break down the lattice by surrounding each ion to form a solution
What shape is the molecule if it has 2 bonding pairs?
What shape is the molecule if it has 3 bonding pairs?
What shape is the molecule if it has 4 bonding pairs?
What shape is the molecule if it has 3 bonding pairs and 1 lone pair?
What shape is the molecule if it has 2 bonding pairs and 2 lone pairs?
What shape is the molecule if it has 5 bonding pairs?
What shape is the molecule if it has 6 bonding pairs?
What are the bond angles in a linear molecule?
What are the bond angles in a trigonal planar molecule?
What are the bond angles in a tetrahedral molecule?
What are the bond angles in a trigonal pyramidal molecule?
What are the bond angles in a non-linear molecule?
What are the bond angles in a trigonal bipyramidal molecule?
90,120 and 180
What are the bond angles in an octahedral molecule?
90 and 180
What is a giant ionic lattice?
A 3D structure of oppositely charged ions held together by strong ionic bonds
What is electronegativity?
A measure of the attraction of a bonded atom for the pair of electrons in a covalent bond
What is a permanent dipole?
A small charge different across a bond that results from a difference in the electronegativities of the bonded atoms
What does a polar covalent bond have?
A permanent dipole
What does a polar molecule have?
An overall dipole when you take into account any dipoles across the bonds
What is an intermolecular force?
An attractive force between neighbouring molecules
What is a permanent dipole-dipole force?
A weak attractive force between permanent dipoles in neighbouring molecules
What are van der Waals' forces?
Attractive forces between induced dipoles in neighbouring molecules
What is a hydrogen bond?
A strong dipole-dipole attraction between an electron deficient H atom on one molecule and a lone pair of electrons on a highly electronegative atom on a different molecule
What are delocalised electrons?
Electrons shared between more than 2 atoms
What is a giant metallic lattice?
A 3D structure of positive ions and delocalised electrons bonded together by strong metallic bonds
What is a simple molecular lattice?
A 3D structure of molecules bonded together by weak intermolecular forces
What is a giant covalent lattice?
A 3D structure of atoms bonded together by strong covalent bonds