Page 44 - Curriculum Visions Dynamic Book
P. 44
Key facts about...
Aluminium
Can be toxic to plants if released into the soil by acid rain
Lightweight metal
Good conductor of electricity
Easily moulded to other shapes
Good conductor of heat
A soft, silvery-white metal, chemical symbol is Al
Melts at a lower temperature than most other metals (660°C)
Extremely strong when combined with other metals
Has no taste
Third most common element, making 8% of the Earth’s crust
Atomic number 13, atomic weight about 27
SHELL DIAGRAMS
The shell diagram on this page represents an atom of the element aluminium. The total number of electrons is shown in the relevant orbitals, or shells, around the central nucleus.
Electron shell
Electron
Nucleus containing protons and neutrons (called nucleons)
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