This lesson requires one magnet, metal and non-metal test objects.
These are included in the kit. The book and iron filings (also in kit) are optional.
What sticks to magnets? Do all metals stick to magnets?
Students test these questions for themselves. In the process, they name and identify common metals.
The metals that make permanent magnets are explored: iron, cobalt and nickel as well as rare-earth alloys.
to do the projects:
of iron filing over the
picture of Hairless Harry.
Use paper clips to hold
the plastic square
of the iron filings
in place.
wants some hair!
items
in you kit
and nearby.
stick to magnets?
stick to magnets?
stick to magnets.
Detector!
With a magnet you can test if a metal object is made with IRON.
Bank Cards!
answer.
answer.
answer.
cans stick
to a magnet?
to a magnet?
to a magnet?
with stainless steel,
a form of iron. Others
are made of aluminum.
with stainless steel,
a form or iron. Others
are made of aluminum.
a metal that will
stick to a magnet
BUT it is mixed
with copper in the
nickel. In this form it doesn't stick.
next slide
to find out!
to separate aluminum cans
from steel cans
question marks
for answers.
is magnetic.
So they are NOT made of IRON.
What IS a copper penny made of anyway
expensive to put into a penny!
Neither does an aluminum pan.
What metal is in these objects
Of course!
Yet it sticks to a magnet.
made with copper and zinc.
Magnets do not stick
to either of these metals.
INSIDE the fastener IS made of IRON.
The magnet DOES stick to iron.
mixture or alloy
of neodymium, iron and boron.
These include:
and some forms of rare-earth metals.
are ferromagnetic?


















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