Physical Properties Of Compounds Flashcards
(32 cards)
What is the shape of an ionic solid? Why can’t they conduct?
Crystal lattice. Due to stability, not enough movement for charges (ions or electrons) to flow.
What does ionic solids maximize and minimize (respectively)?
Attractive forces and repulsive forces.
Why can Ionic liquids conduct electricity? What is it caused by?
Freely moving ions caused by no defined arrangement of ions.
Ionic liquids are less stable, so what increases?
Repulsion forces
True or False, Ionic solids are soluble in water.
True
What is dissociation of an ionic solid?
Ions are separated and surrounded by water molecules.
What is the “cage” of water molecules called?
Solvation shell
What is the partially negative oxygen attracted to? And the partially positive hydrogen? (Respectively)
Cation, anion
Transition question: what are the 3 intramolecular forces?
Metallic, covalent, Ionic
Do molecular solids conduct electricity? Why?
No, they are neutral, total charge is 0
What INTERmolecular force do molecular solids MAXIMIZE?
Attractive forces
Do molecular solids have high or low melting points?
Low
Do molecular liquids conduct electricity?
No
True or false, polar molecules have higher melting point
True
Do molecular solids undergo dissociation? What happens then?
No, they stay together in chunks and surrounded my water molecules.
Are molecular solutions conductive?
No
True or False: some molecular solids dissolve IF POLAR
True, only some are soluble
Do metallic solids conduct electricity? Why?
Yes, electrons are freely moving.
What is the range of metallic melting point?
Higher than molecular, lower than ionic
Do metals conduct as a liquid?
Yes
Can metals dissolve in water?
No
Do metals dissolve in polar or non polar solutions? Why?
Non polar because metallic bonds are non polar
Do network covalent solids conduct?
No, they don’t conduct in any form, even liquids
What is the shape of network covalent solids?
ATOMS linked by strong covalent bonds
