gcse chemistry Karteikarten am Structure and Properties, erstellt von Ella Wolf am 15/05/2013.
|
Erstellt von Ella Wolf
vor etwa 11 Jahre
|
|
Schließen
|
|
Erstellt von Ella Wolf
vor etwa 11 Jahre
|
|
why do simple molecules not conduct electricity?
why do giant ionic lattices have high melting and boiling points?
what are alloys and what are the differences between the structure of an alloy and a pure metal?
what is special about shape memory alloys? give an example
what do the properties of polymers depend upon?
why are Low density and High density polythene different?
what are plastics that have individual tangled polymer chains?
what are the properties of thermosetting plastics?
why do thermosoftening polymers melt easily?
what size of structure does nano science refer to ?
why may nano-particles have different properties to the same materials in bulk?
when can ionic compounds conduct electricity and why?
in diamond, how many bonds does each carbon atom form, what type of bond?
in graphite, each carbon atom bonds to how may others?
why can graphite conduct heat and electricity?
how strong are the forces between the layers in graphite and what property does this give graphite?
what can carbon also form with different numbers of carbon atoms?
what are the uses of fullerenes?
(4)
why can metals conduct heat and electricity?
why can metals be bent and shaped?
Do substances that consist of simple molecules have low or high melting/boiling points?
do substances that have simple molecules have weak or strong inter molecular forces?
incomparision to intermolecular forces, are the covalent bonds strong or weak
which forces are overcome when a simple molecular substance melts or boils?
