Bonding And Shapes Flashcards
Metals are good conductors of electricity due to
Mobility between free moving, delicalised electrons within lattice. Electrons can carry charge tf conductor
Metals are good conductors of heat due to
The fact tgat they have delocalised electrons flowung through the lattice which collide with metal atoms and transmit thermal energy
Metals are makleable and ductice due to
The fact that the attraction between metal lattice and delocalised electrons can take a fair amount of energy/force to break, it can be stretched or hit and maibtain shape
Metals generally ahve a high boiling point due to
The fact that electrostatic forces of attraction require high amounts of energy to break and therefore can withstand high temperatures before melting/boiling
Alloys
Combinations of two or more metals, gbey are harder, less malleable and poorer conductors bc of disturbed structure
Lustre
Delocalised electrons form a barrier that light can reflect off
Galvanising
Zinc coating to prevent rusting
Reactivity
K, Na, Ca, Mg, Al, (C), Zn, Fe, Sn, Pb, (H), Cu, Ag, Au, Pt
What is the reaction for an ionic compound
Double displacement reaction - electron transfer
Acetate
CH3COO (-1)
Permanganate
MnO4 (-1)
Cyanide
CN (-1)
Chromate
Dichromate
CrO4 (-2)
Cr2O7 (-2)
covalent bonding
force of attraction formed when sharing 2 electrons
dative bond
when an ion is added to a covalent structure, usually H+, and the atom shares a lone pair with it to stabilise
