Bonding in metals Flashcards
What is the structure of a metal crystal?
Solid metals= metal atoms combine chemically with atoms of other elements, they lose valence electrons, become positively charged
Most metals are ____________ solids
crystalline
What is a metal crystal composed of?
Closely packed, positively charged metal ions
What is an attraction between a positive metal ion and the electrons surrounding it called?
metallic bond
What are the properties of metals?
shiny luster, high levels of malleability, ductility, and electrical conductivity, and thermal conductivity
What is another name for a material may be flattened into thin sheets by hammering or rolling?
malleability
What is the ability of a material to have its shape changed into wires and thin strans?
ductility
what is the shiny and reflective luster of metals called?
metallic luster
What makes metal have a luster?
the valence electrons, absorb the light and then re-emit it.
What is the total energy of motion of all the particles in an object?
thermal energy
What is the transfer of thermal energy called?
heat
How come metals can be malleable and ductile?
the positive metal ions are attracted to the loose electrons all around them rather than to other metal ions
Why do metals conduct heat easily?
the valence electrons within a metal are free to move
What is it called when charged particles are free to move and conduct an electric current?
electrical conductiivty
Why dod metals conduct electric current easily?
The valence electrons can move freely among the atoms
