types of solid g12 chem Flashcards
what are ionic solids made up of?
oppsotely charged ions
what holds ionic solids together
electrostatic forces that are directional, rigid and fixed
what are properties of ionic solids
- hard and brittle
- high melting points
- poor conductors of electricity (when solid)
what are the 6 types of solids
ionic, convalent network, molecular, metallic, atomic, amorphous
what are molecular solids made up of? What holds them together?
made up of non polar and polar molcules
held by intermolecular forces
properties of molecular solids - ignoring dependacne on IMF
fairly soft, poor condictors of electricity, low-moderate melting points
What are covaent networks made up of? what holds them together
made up of huge networks of atoms
helf togther by covalent bonds
what are metallic solids made up of?
fixed, positve metallic ions surrounded by seas of delocalized electrons
what is a delocalized electron
an electron that is not connected to an atom
what holds together metallic solids
non directional metallic bonds
properties of metallic solids
soft-hard, malleable, excellent conudctors of electricity, low-high mp
what are atomic solids made up of? what holds them together
noble gas atoms
IMF
properties of atomic solids
soft, poor conductors of electricity, very low metling points
what is an amorphous solid? what holds it together
solids made up of atoms with no fixed atom arrangment
held by covalent bonds
properties of amorpous solids
soft, poor conductors of electricity, low mp
