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PHYSCI
Lesson 6
Electrical properties and structure
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Conductivity
Copper
and silver, used in wiring, have free-moving
electrons
in their metallic structure making them excellent conductors.
Semiconducting properties
Silicon
, using electronics, has a
crystalline
structure that allows precise control of electron flow, i'm making it ideal for transistors and chips
Insulation
Plastics like
pvc
, used in cable coverings, have tightly bound
electrons
that prevent electrical current flow
Corrosion resistance
Stainless steel
, used in medical implants and kitchen appliances has a structure that forms a passive
oxide layer
, preventing rusting
Reactivity
Gold
, used in jewelry and electronics is non-reactive due to its stable
atomic structure
ensuring
durability
and resistance to tarnishing
Degradability
Polymers like
PLA
, used in biodegradable packaging have structures that break down under specific environmental conditions