bonding Flashcards
what state are ionic compounds always at room temperature and why
solids due to the many strong electrostatic forces of attraction between oppositely charged ions in a lattice which require a lot of energy to overcome resulting in high melting point
why can ionic compounds conduct when they are molten or aqeous
the ion re free to move and carry charge though out the structure
why are ionic compounds brittle
when they are struck you are forcing the the ion with like charges together causing them to repel apart
define electron pair repulsion theory
each pair of electron around n atom will repel all other electron pairs
tph pairs of electrons will take up positions as far apart as possible to minimise refusion
Describe a test to confirm that an unknown solid was an ionic compoud
melt the solid
use a multimeter (or battery, powerpack and bulb) to test the conductivity, if it conducts it must be an ionic compound
