Metals and metallic bonding Flashcards
Where are metals found on the periodic table?
On the left and the centre of the periodic table.
Group 1 and two =
Highly reactive metals
Centre of periodic table =
Transition metals, generally less reactive
When metals react…………………………………………………
They loose electrons to achieve a full outer energy level.
When atoms have an overall charge what are they known as?
Ions.
METALS ALWAYS
metals always form positive ions.
What kind of structure do metals have ?
- A giant structure of atoms.
- Arranged in regular layers.
The electrons in the outer energy level of each atom are
delocalised.
What kind of attraction do metals have and what is this between?
A strong electrostatic attraction between the sea of delocalised negative electrons and the positive metal ions.
Electrostatic attraction=
Between a positive and a negative object.
What is the electrostatic attraction in metals known as ?
A metallic bond , metallic bonds are strong.
Why do metals have high melting and boiling points?
Because a great deal of energy is required to break the strong metallic bonds.
Why are metals excellent conductors of heat and electricity?
Because the delocalised electrons can move throughout the metal.Because electrons are charged, these moving electrons can carry an electric current.
What allows the moving electrons to conduct heat in a metal?
The moving electrons can carry thermal energy which allows them to coduct heat.
Why can metals be bent and shaped?
Because in metals the layers of atoms are able to slide over each other.
