Elements and the Periodic Table

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Elements and the Periodic Table
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1.1 Metallic Elements
The Metallic Lattice

• LO I understand what holds the atoms together in
  a metallic lattice.

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A lattice is
.
a regular repeating pattern
Each metal atom is made up of
The outer electrons are to any one
atom.
not fixed
delocalised
They are said to be and can move from
atom to atom.

• LO I understand what holds the atoms together in
  a metallic lattice.

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The outer electrons of one metal atom are
attracted to the nuclei of all the
atoms.
surrounding
electrostatic
A metallic bond is the attraction
between the negative delocalised
electrons and the surrounding positive .
outer
ions

• LO I understand what holds the atoms together in
  a metallic lattice.

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Physical Properties of Metals
LO I understand how some properties of metals
relate to the metallic bonds.
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Electrical Conductivity
Metals are able to conduct electricity as the
outer electrons are and can
move from one end of the metallic lattice to the
other.
delocalised
(ability to be rolled into sheets)
Malleable
(ability to be stretched out into wires)
Ductile
The forces holding the metallic lattice together
act equally in directions.
all
This means that the metal atoms can move and slip
past each other without the
metallic bond.
breaking
LO I understand how properties of metals relate
to the metallic bonds.
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Boiling point
Boiling point trend down group 1
decreases
The boiling point down the
group.
further away
The outer electrons are
from the nucleus and so are not held as tightly.
The strength of the metallic bond
.
decreases
LO I understand how properties of metals relate
to the metallic bonds.
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Boiling point trend across a period 4
increases
The boiling point of the metals
from left to right.
The number of outer electrons is
.
increasing
increases
As the number of outer electrons
, the strength of the metallic bond increases.
LO I understand how properties of metals relate
to the metallic bonds.