Metals Flashcards
The valence electrons are _____ throughout the crystal, providing a strong cohesive force that holds the metal atoms together.
Delocalized
_____ solids - Extended networks of atoms held together by metallic bonding.
Metallic
_____ solids - Extending networks of ions held together by ion-ion interactions.
Ionic
_____ solids - Extending networks of atoms held by covalent bonds.
Covalent-network
______ solids - Discrete molecules held together by intermolecular forces.
Molecular
_____ solids are poor conductor of heat and electricity, has relatively high melting point, hard but brittle, relatively dense and has a dull surface.
Ionic
_____ solids are poor conductor of heat and electricity, has low melting point, soft, has low density, and has a dull surface.
Molecular
_____ solids are poor conductor of heat and electricity, has high melting point, very hard but brittle, has low density, and has a dull surface.
Covalent
_____ solids are good conductor of heat and electricity, melting point depends on electron configuration, ductile and malleable, usually has high density, and has a lustrous surface.
Metallic
Metals are good _____ conductors because their delocalized electrons carry electrical charge through the metal.
Electrical
Metals are good _____ conductors because their delocalized electrons transfer energy.
Heat
Metals have high _____ and _____ points because of the metallic bonding in the giant structure of a metal is very strong.
Melting, Boiling
Metals are _____ because they can be hammered and bent into thin sheets without breaking.
Malleable
Metals are _____ because they can be stretched into wires.
Ductile
4 best electrical and heat conductors.
Silver > Copper > Gold > Aluminum
_____ are mixtures of elements that have properties/characteristic of metals.
Alloys
An alloy made of ~90% copper and ~10% tin.
Bronze
An alloy made of ~70% copper and ~30% zinc.
Brass
An alloy made of 99% iron and 1% carbon.
Steel
An alloy made of ~74% iron, ~8% carbon, and ~18% chromium.
Stainless Steel
An alloy made of ~80% nickel and ~20% chromium.
Nichrome
An alloy made of ~63% tin and ~37% lead.
Solder
An alloy made of ∼92% tin, 6% antimony, and 2% copper.
Pewter
An alloy made of 92.5% silver and 7.5% copper.
Sterling Silver
An alloy made of ~95% aluminum, ~4% copper, ~0.5% magnesium, and ~0.5% manganese.
Duralumin
In _____ alloys, solute particles take the place of solvent metal atoms.
Substitutional
In _____ alloys, solute particles find their way into the holes between solvent metal atoms.
Interstitial
_____ compounds are homogeneous alloys with definite properties and compositions.
Intermetallic
