Properties Flashcards
What’s re the properties of metals
Ductile
Malleable
Durable and strong
Good electrical conductors
Good thermal conductors
solid at room temp with the exception of mercury
high melting point
are lustrous (shiny)
What’s re the properties of non metals
Have a dull appearance
Solid at room temp with the exception of Bromine which is a liquid.
They are brittle
They are insulators of electricity. with the exception of
graphite
They are insulators of heat with the exception Of A diamond
What are the properties of semi metals
Electrical conductively increases with the increase
in temperature
What is electrical conductivity
Ability of a metal to allow
current to pass through it
What decreases the electrical conductivity of metals
Increase in
temp of metals decreases
electrical conductivety:
What is a conductor
A material which allows
electrical current
to pass through it.
What is an insulator
A material which does not allow electrical current to pass through it
What sis thermal conductivity
The ability of a material to allow Heat to pass through it-
How should you test which metal is a higher conductivity of heat
Add candle wax to one end of each metal rod.
Heat the other end of the metal rods of the at the same time
The rod for which the wax melts first has a greater
thermal conductivity
Magnetism
There are 3 ferromagnetic materials
Nickel (Ni)
cobalt (CO)
iron (Fe)
Magnetism
Will an alloy with these materials have magnetic properties
Yes
Steel- Fe + C
Alnico - AI + Ni + CO
How do u create permanent magnets
By mixing ferromagnetic with ceramics or polymers to
create permanent magnets
