Page 44 - Curriculum Visions Dynamic Book

Key facts about...
Sulphur
Has no taste Has no smell
Poor conductor of electricity and heat
Can be found as native sulphur in crystalline form
A very reactive element that combines with almost all other elements
A mustard-yellow solid, chemical symbol S
Atomic number 16, atomic weight about 32
Melts at 119°C, just a little over the boiling point of water
Soft and can be scratched with a fingernail
Density 2 g/ml, about twice that of water
Insoluble in water
SHELL DIAGRAMS
The shell diagram on this page is a representation of an atom of the element sulphur. The total number of electrons are shown in the relevant orbitals, or shells, around the central nucleus.
Electron shell
Electron
Nucleus containing protons and neutrons (called nucleons)
 A hydrogen sulphide solution is added to silver nitrate, leaving a dark brown precipitate of silver sulphide. Sulphide precipitates are mostly a dark colour and are frequently black.
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