MCS- ice and iodine Flashcards
1
Q
What happens to water below 0 degrees?
A
molecules have less energy so hydroen bonds fix molecukes in potisiton
2
Q
What sructure do they have?
A
ICe has a £D hexagonal crystal strcture
3
Q
What do spaces between molecules cause the molecule to be?
A
- expand so becomes less dense
4
Q
how does water have a high melting point?
A
Due to strong hydroge bonding between the molecules.
5
Q
bonding in Iodine
A
- covalently bonded molecule.
- bond is very strong
- weak induced dipole (VDW) forces exist between molecules of I2 to ive a crystal structure
6
Q
What state is iodine in at RT?
A
-shiny grey solid
7
Q
how does it have. alow MP/BP?
A
weak VDWS forces are very easily bbroken. I2 stay intact
8
Q
What change of state can it go through
A
sulbimation - when heated the grey solid turns into a purple gas
9
Q
How is it slightly soluble in H2O?
A
it is non-polar.
